Add limiters and database changes

cmd/serve.go

@@ -83,6 +83,8 @@ var flagsServe = append(
 	altsrc.NewStringFlag(&cli.StringFlag{Name: "visitor-request-limit-exempt-hosts", Aliases: []string{"visitor_request_limit_exempt_hosts"}, EnvVars: []string{"NTFY_VISITOR_REQUEST_LIMIT_EXEMPT_HOSTS"}, Value: "", Usage: "hostnames and/or IP addresses of hosts that will be exempt from the visitor request limit"}),
 	altsrc.NewIntFlag(&cli.IntFlag{Name: "visitor-message-daily-limit", Aliases: []string{"visitor_message_daily_limit"}, EnvVars: []string{"NTFY_VISITOR_MESSAGE_DAILY_LIMIT"}, Value: server.DefaultVisitorMessageDailyLimit, Usage: "max messages per visitor per day, derived from request limit if unset"}),
 	altsrc.NewIntFlag(&cli.IntFlag{Name: "visitor-email-limit-burst", Aliases: []string{"visitor_email_limit_burst"}, EnvVars: []string{"NTFY_VISITOR_EMAIL_LIMIT_BURST"}, Value: server.DefaultVisitorEmailLimitBurst, Usage: "initial limit of e-mails per visitor"}),
+	altsrc.NewIntFlag(&cli.IntFlag{Name: "visitor-sms-daily-limit", Aliases: []string{"visitor_sms_daily_limit"}, EnvVars: []string{"NTFY_VISITOR_SMS_DAILY_LIMIT"}, Value: server.DefaultVisitorSMSDailyLimit, Usage: "max number of SMS messages per visitor per day"}),
+	altsrc.NewIntFlag(&cli.IntFlag{Name: "visitor-call-daily-limit", Aliases: []string{"visitor_call_daily_limit"}, EnvVars: []string{"NTFY_VISITOR_CALL_DAILY_LIMIT"}, Value: server.DefaultVisitorCallDailyLimit, Usage: "max number of phone calls per visitor per day"}),
 	altsrc.NewDurationFlag(&cli.DurationFlag{Name: "visitor-email-limit-replenish", Aliases: []string{"visitor_email_limit_replenish"}, EnvVars: []string{"NTFY_VISITOR_EMAIL_LIMIT_REPLENISH"}, Value: server.DefaultVisitorEmailLimitReplenish, Usage: "interval at which burst limit is replenished (one per x)"}),
 	altsrc.NewBoolFlag(&cli.BoolFlag{Name: "visitor-subscriber-rate-limiting", Aliases: []string{"visitor_subscriber_rate_limiting"}, EnvVars: []string{"NTFY_VISITOR_SUBSCRIBER_RATE_LIMITING"}, Value: false, Usage: "enables subscriber-based rate limiting"}),
 	altsrc.NewBoolFlag(&cli.BoolFlag{Name: "behind-proxy", Aliases: []string{"behind_proxy", "P"}, EnvVars: []string{"NTFY_BEHIND_PROXY"}, Value: false, Usage: "if set, use X-Forwarded-For header to determine visitor IP address (for rate limiting)"}),
@@ -168,6 +170,8 @@ func execServe(c *cli.Context) error {
 	visitorMessageDailyLimit := c.Int("visitor-message-daily-limit")
 	visitorEmailLimitBurst := c.Int("visitor-email-limit-burst")
 	visitorEmailLimitReplenish := c.Duration("visitor-email-limit-replenish")
+	visitorSMSDailyLimit := c.Int("visitor-sms-daily-limit")
+	visitorCallDailyLimit := c.Int("visitor-call-daily-limit")
 	behindProxy := c.Bool("behind-proxy")
 	stripeSecretKey := c.String("stripe-secret-key")
 	stripeWebhookKey := c.String("stripe-webhook-key")
@@ -329,6 +333,8 @@ func execServe(c *cli.Context) error {
 	conf.VisitorMessageDailyLimit = visitorMessageDailyLimit
 	conf.VisitorEmailLimitBurst = visitorEmailLimitBurst
 	conf.VisitorEmailLimitReplenish = visitorEmailLimitReplenish
+	conf.VisitorSMSDailyLimit = visitorSMSDailyLimit
+	conf.VisitorCallDailyLimit = visitorCallDailyLimit
 	conf.VisitorSubscriberRateLimiting = visitorSubscriberRateLimiting
 	conf.BehindProxy = behindProxy
 	conf.StripeSecretKey = stripeSecretKey

cmd/tier.go

@@ -18,6 +18,8 @@ const (
 	defaultMessageLimit             = 5000
 	defaultMessageExpiryDuration    = "12h"
 	defaultEmailLimit               = 20
+	defaultSMSLimit                 = 10
+	defaultCallLimit                = 10
 	defaultReservationLimit         = 3
 	defaultAttachmentFileSizeLimit  = "15M"
 	defaultAttachmentTotalSizeLimit = "100M"
@@ -48,6 +50,8 @@ var cmdTier = &cli.Command{
 				&cli.Int64Flag{Name: "message-limit", Value: defaultMessageLimit, Usage: "daily message limit"},
 				&cli.StringFlag{Name: "message-expiry-duration", Value: defaultMessageExpiryDuration, Usage: "duration after which messages are deleted"},
 				&cli.Int64Flag{Name: "email-limit", Value: defaultEmailLimit, Usage: "daily email limit"},
+				&cli.Int64Flag{Name: "sms-limit", Value: defaultSMSLimit, Usage: "daily SMS limit"},
+				&cli.Int64Flag{Name: "call-limit", Value: defaultCallLimit, Usage: "daily phone call limit"},
 				&cli.Int64Flag{Name: "reservation-limit", Value: defaultReservationLimit, Usage: "topic reservation limit"},
 				&cli.StringFlag{Name: "attachment-file-size-limit", Value: defaultAttachmentFileSizeLimit, Usage: "per-attachment file size limit"},
 				&cli.StringFlag{Name: "attachment-total-size-limit", Value: defaultAttachmentTotalSizeLimit, Usage: "total size limit of attachments for the user"},
@@ -91,6 +95,8 @@ Examples:
 				&cli.Int64Flag{Name: "message-limit", Usage: "daily message limit"},
 				&cli.StringFlag{Name: "message-expiry-duration", Usage: "duration after which messages are deleted"},
 				&cli.Int64Flag{Name: "email-limit", Usage: "daily email limit"},
+				&cli.Int64Flag{Name: "sms-limit", Usage: "daily SMS limit"},
+				&cli.Int64Flag{Name: "call-limit", Usage: "daily phone call limit"},
 				&cli.Int64Flag{Name: "reservation-limit", Usage: "topic reservation limit"},
 				&cli.StringFlag{Name: "attachment-file-size-limit", Usage: "per-attachment file size limit"},
 				&cli.StringFlag{Name: "attachment-total-size-limit", Usage: "total size limit of attachments for the user"},
@@ -215,6 +221,8 @@ func execTierAdd(c *cli.Context) error {
 		MessageLimit:             c.Int64("message-limit"),
 		MessageExpiryDuration:    messageExpiryDuration,
 		EmailLimit:               c.Int64("email-limit"),
+		SMSLimit:                 c.Int64("sms-limit"),
+		CallLimit:                c.Int64("call-limit"),
 		ReservationLimit:         c.Int64("reservation-limit"),
 		AttachmentFileSizeLimit:  attachmentFileSizeLimit,
 		AttachmentTotalSizeLimit: attachmentTotalSizeLimit,
@@ -267,6 +275,12 @@ func execTierChange(c *cli.Context) error {
 	if c.IsSet("email-limit") {
 		tier.EmailLimit = c.Int64("email-limit")
 	}
+	if c.IsSet("sms-limit") {
+		tier.SMSLimit = c.Int64("sms-limit")
+	}
+	if c.IsSet("call-limit") {
+		tier.CallLimit = c.Int64("call-limit")
+	}
 	if c.IsSet("reservation-limit") {
 		tier.ReservationLimit = c.Int64("reservation-limit")
 	}
@@ -357,6 +371,8 @@ func printTier(c *cli.Context, tier *user.Tier) {
 	fmt.Fprintf(c.App.ErrWriter, "- Message limit: %d\n", tier.MessageLimit)
 	fmt.Fprintf(c.App.ErrWriter, "- Message expiry duration: %s (%d seconds)\n", tier.MessageExpiryDuration.String(), int64(tier.MessageExpiryDuration.Seconds()))
 	fmt.Fprintf(c.App.ErrWriter, "- Email limit: %d\n", tier.EmailLimit)
+	fmt.Fprintf(c.App.ErrWriter, "- SMS limit: %d\n", tier.SMSLimit)
+	fmt.Fprintf(c.App.ErrWriter, "- Phone call limit: %d\n", tier.CallLimit)
 	fmt.Fprintf(c.App.ErrWriter, "- Reservation limit: %d\n", tier.ReservationLimit)
 	fmt.Fprintf(c.App.ErrWriter, "- Attachment file size limit: %s\n", util.FormatSize(tier.AttachmentFileSizeLimit))
 	fmt.Fprintf(c.App.ErrWriter, "- Attachment total size limit: %s\n", util.FormatSize(tier.AttachmentTotalSizeLimit))

server/config.go

@@ -47,6 +47,8 @@ const (
 	DefaultVisitorMessageDailyLimit             = 0
 	DefaultVisitorEmailLimitBurst               = 16
 	DefaultVisitorEmailLimitReplenish           = time.Hour
+	DefaultVisitorSMSDailyLimit                 = 10
+	DefaultVisitorCallDailyLimit                = 10
 	DefaultVisitorAccountCreationLimitBurst     = 3
 	DefaultVisitorAccountCreationLimitReplenish = 24 * time.Hour
 	DefaultVisitorAuthFailureLimitBurst         = 30
@@ -126,6 +128,8 @@ type Config struct {
 	VisitorMessageDailyLimit             int
 	VisitorEmailLimitBurst               int
 	VisitorEmailLimitReplenish           time.Duration
+	VisitorSMSDailyLimit                 int
+	VisitorCallDailyLimit                int
 	VisitorAccountCreationLimitBurst     int
 	VisitorAccountCreationLimitReplenish time.Duration
 	VisitorAuthFailureLimitBurst         int

server/errors.go

@@ -126,6 +126,8 @@ var (
 	errHTTPTooManyRequestsLimitReservations          = &errHTTP{42907, http.StatusTooManyRequests, "limit reached: too many topic reservations for this user", "", nil}
 	errHTTPTooManyRequestsLimitMessages              = &errHTTP{42908, http.StatusTooManyRequests, "limit reached: daily message quota reached", "https://ntfy.sh/docs/publish/#limitations", nil}
 	errHTTPTooManyRequestsLimitAuthFailure           = &errHTTP{42909, http.StatusTooManyRequests, "limit reached: too many auth failures", "https://ntfy.sh/docs/publish/#limitations", nil} // FIXME document limit
+	errHTTPTooManyRequestsLimitSMS                   = &errHTTP{42910, http.StatusTooManyRequests, "limit reached: daily SMS quota reached", "https://ntfy.sh/docs/publish/#limitations", nil}
+	errHTTPTooManyRequestsLimitCalls                 = &errHTTP{42911, http.StatusTooManyRequests, "limit reached: daily phone call quota reached", "https://ntfy.sh/docs/publish/#limitations", nil}
 	errHTTPInternalError                             = &errHTTP{50001, http.StatusInternalServerError, "internal server error", "", nil}
 	errHTTPInternalErrorInvalidPath                  = &errHTTP{50002, http.StatusInternalServerError, "internal server error: invalid path", "", nil}
 	errHTTPInternalErrorMissingBaseURL               = &errHTTP{50003, http.StatusInternalServerError, "internal server error: base-url must be be configured for this feature", "https://ntfy.sh/docs/config/", nil}

server/server.go

@@ -683,6 +683,10 @@ func (s *Server) handlePublishInternal(r *http.Request, v *visitor) (*message, e
 		return nil, errHTTPTooManyRequestsLimitMessages.With(t)
 	} else if email != "" && !vrate.EmailAllowed() {
 		return nil, errHTTPTooManyRequestsLimitEmails.With(t)
+	} else if sms != "" && !vrate.SMSAllowed() {
+		return nil, errHTTPTooManyRequestsLimitSMS.With(t)
+	} else if call != "" && !vrate.CallAllowed() {
+		return nil, errHTTPTooManyRequestsLimitCalls.With(t)
 	}
 	if m.PollID != "" {
 		m = newPollRequestMessage(t.ID, m.PollID)
@@ -726,7 +730,7 @@ func (s *Server) handlePublishInternal(r *http.Request, v *visitor) (*message, e
 		if s.config.TwilioAccount != "" && sms != "" {
 			go s.sendSMS(v, r, m, sms)
 		}
-		if call != "" {
+		if s.config.TwilioAccount != "" && call != "" {
 			go s.callPhone(v, r, m, call)
 		}
 		if s.config.UpstreamBaseURL != "" {

server/server.yml

@@ -224,11 +224,17 @@
 # visitor-request-limit-exempt-hosts: ""
 
 # Rate limiting: Hard daily limit of messages per visitor and day. The limit is reset
-# every day at midnight UTC. If the limit is not set (or set to zero), the request
-# limit (see above) governs the upper limit.
+# every day at midnight UTC. If the limit is not set (or set to zero), the request limit (see above)
+# governs the upper limit. SMS and calls are only supported if the twilio-settings are properly configured.
 #
 # visitor-message-daily-limit: 0
 
+# Rate limiting: Daily limit of SMS and calls per visitor and day. The limit is reset every day
+# at midnight UTC. SMS and calls are only supported if the twilio-settings are properly configured.
+#
+# visitor-sms-daily-limit: 10
+# visitor-call-daily-limit: 10
+
 # Rate limiting: Allowed emails per visitor:
 # - visitor-email-limit-burst is the initial bucket of emails each visitor has
 # - visitor-email-limit-replenish is the rate at which the bucket is refilled

server/server_account.go

@@ -56,6 +56,8 @@ func (s *Server) handleAccountGet(w http.ResponseWriter, r *http.Request, v *vis
 			Messages:                 limits.MessageLimit,
 			MessagesExpiryDuration:   int64(limits.MessageExpiryDuration.Seconds()),
 			Emails:                   limits.EmailLimit,
+			SMS:                      limits.SMSLimit,
+			Calls:                    limits.CallLimit,
 			Reservations:             limits.ReservationsLimit,
 			AttachmentTotalSize:      limits.AttachmentTotalSizeLimit,
 			AttachmentFileSize:       limits.AttachmentFileSizeLimit,
@@ -67,6 +69,10 @@ func (s *Server) handleAccountGet(w http.ResponseWriter, r *http.Request, v *vis
 			MessagesRemaining:            stats.MessagesRemaining,
 			Emails:                       stats.Emails,
 			EmailsRemaining:              stats.EmailsRemaining,
+			SMS:                          stats.SMS,
+			SMSRemaining:                 stats.SMSRemaining,
+			Calls:                        stats.Calls,
+			CallsRemaining:               stats.CallsRemaining,
 			Reservations:                 stats.Reservations,
 			ReservationsRemaining:        stats.ReservationsRemaining,
 			AttachmentTotalSize:          stats.AttachmentTotalSize,

server/types.go

@@ -287,6 +287,8 @@ type apiAccountLimits struct {
 	Messages                 int64  `json:"messages"`
 	MessagesExpiryDuration   int64  `json:"messages_expiry_duration"`
 	Emails                   int64  `json:"emails"`
+	SMS                      int64  `json:"sms"`
+	Calls                    int64  `json:"calls"`
 	Reservations             int64  `json:"reservations"`
 	AttachmentTotalSize      int64  `json:"attachment_total_size"`
 	AttachmentFileSize       int64  `json:"attachment_file_size"`
@@ -299,6 +301,10 @@ type apiAccountStats struct {
 	MessagesRemaining            int64 `json:"messages_remaining"`
 	Emails                       int64 `json:"emails"`
 	EmailsRemaining              int64 `json:"emails_remaining"`
+	SMS                          int64 `json:"sms"`
+	SMSRemaining                 int64 `json:"sms_remaining"`
+	Calls                        int64 `json:"calls"`
+	CallsRemaining               int64 `json:"calls_remaining"`
 	Reservations                 int64 `json:"reservations"`
 	ReservationsRemaining        int64 `json:"reservations_remaining"`
 	AttachmentTotalSize          int64 `json:"attachment_total_size"`

server/visitor.go

@@ -56,6 +56,8 @@ type visitor struct {
 	requestLimiter      *rate.Limiter      // Rate limiter for (almost) all requests (including messages)
 	messagesLimiter     *util.FixedLimiter // Rate limiter for messages
 	emailsLimiter       *util.RateLimiter  // Rate limiter for emails
+	smsLimiter          *util.FixedLimiter // Rate limiter for SMS
+	callsLimiter        *util.FixedLimiter // Rate limiter for calls
 	subscriptionLimiter *util.FixedLimiter // Fixed limiter for active subscriptions (ongoing connections)
 	bandwidthLimiter    *util.RateLimiter  // Limiter for attachment bandwidth downloads
 	accountLimiter      *rate.Limiter      // Rate limiter for account creation, may be nil
@@ -79,6 +81,8 @@ type visitorLimits struct {
 	EmailLimit               int64
 	EmailLimitBurst          int
 	EmailLimitReplenish      rate.Limit
+	SMSLimit                 int64
+	CallLimit                int64
 	ReservationsLimit        int64
 	AttachmentTotalSizeLimit int64
 	AttachmentFileSizeLimit  int64
@@ -91,6 +95,10 @@ type visitorStats struct {
 	MessagesRemaining            int64
 	Emails                       int64
 	EmailsRemaining              int64
+	SMS                          int64
+	SMSRemaining                 int64
+	Calls                        int64
+	CallsRemaining               int64
 	Reservations                 int64
 	ReservationsRemaining        int64
 	AttachmentTotalSize          int64
@@ -107,10 +115,12 @@ const (
 )
 
 func newVisitor(conf *Config, messageCache *messageCache, userManager *user.Manager, ip netip.Addr, user *user.User) *visitor {
-	var messages, emails int64
+	var messages, emails, sms, calls int64
 	if user != nil {
 		messages = user.Stats.Messages
 		emails = user.Stats.Emails
+		sms = user.Stats.SMS
+		calls = user.Stats.Calls
 	}
 	v := &visitor{
 		config:              conf,
@@ -124,11 +134,13 @@ func newVisitor(conf *Config, messageCache *messageCache, userManager *user.Mana
 		requestLimiter:      nil, // Set in resetLimiters
 		messagesLimiter:     nil, // Set in resetLimiters, may be nil
 		emailsLimiter:       nil, // Set in resetLimiters
+		smsLimiter:          nil, // Set in resetLimiters, may be nil
+		callsLimiter:        nil, // Set in resetLimiters, may be nil
 		bandwidthLimiter:    nil, // Set in resetLimiters
 		accountLimiter:      nil, // Set in resetLimiters, may be nil
 		authLimiter:         nil, // Set in resetLimiters, may be nil
 	}
-	v.resetLimitersNoLock(messages, emails, false)
+	v.resetLimitersNoLock(messages, emails, sms, calls, false)
 	return v
 }
 
@@ -147,12 +159,22 @@ func (v *visitor) contextNoLock() log.Context {
 		"visitor_messages":               info.Stats.Messages,
 		"visitor_messages_limit":         info.Limits.MessageLimit,
 		"visitor_messages_remaining":     info.Stats.MessagesRemaining,
-		"visitor_emails":                 info.Stats.Emails,
-		"visitor_emails_limit":           info.Limits.EmailLimit,
-		"visitor_emails_remaining":       info.Stats.EmailsRemaining,
 		"visitor_request_limiter_limit":  v.requestLimiter.Limit(),
 		"visitor_request_limiter_tokens": v.requestLimiter.Tokens(),
 	}
+	if v.config.SMTPSenderFrom != "" {
+		fields["visitor_emails"] = info.Stats.Emails
+		fields["visitor_emails_limit"] = info.Limits.EmailLimit
+		fields["visitor_emails_remaining"] = info.Stats.EmailsRemaining
+	}
+	if v.config.TwilioAccount != "" {
+		fields["visitor_sms"] = info.Stats.SMS
+		fields["visitor_sms_limit"] = info.Limits.SMSLimit
+		fields["visitor_sms_remaining"] = info.Stats.SMSRemaining
+		fields["visitor_calls"] = info.Stats.Calls
+		fields["visitor_calls_limit"] = info.Limits.CallLimit
+		fields["visitor_calls_remaining"] = info.Stats.CallsRemaining
+	}
 	if v.authLimiter != nil {
 		fields["visitor_auth_limiter_limit"] = v.authLimiter.Limit()
 		fields["visitor_auth_limiter_tokens"] = v.authLimiter.Tokens()
@@ -216,6 +238,18 @@ func (v *visitor) EmailAllowed() bool {
 	return v.emailsLimiter.Allow()
 }
 
+func (v *visitor) SMSAllowed() bool {
+	v.mu.RLock() // limiters could be replaced!
+	defer v.mu.RUnlock()
+	return v.smsLimiter.Allow()
+}
+
+func (v *visitor) CallAllowed() bool {
+	v.mu.RLock() // limiters could be replaced!
+	defer v.mu.RUnlock()
+	return v.callsLimiter.Allow()
+}
+
 func (v *visitor) SubscriptionAllowed() bool {
 	v.mu.RLock() // limiters could be replaced!
 	defer v.mu.RUnlock()
@@ -296,6 +330,8 @@ func (v *visitor) Stats() *user.Stats {
 	return &user.Stats{
 		Messages: v.messagesLimiter.Value(),
 		Emails:   v.emailsLimiter.Value(),
+		SMS:      v.smsLimiter.Value(),
+		Calls:    v.callsLimiter.Value(),
 	}
 }
 
@@ -304,6 +340,8 @@ func (v *visitor) ResetStats() {
 	defer v.mu.RUnlock()
 	v.emailsLimiter.Reset()
 	v.messagesLimiter.Reset()
+	v.smsLimiter.Reset()
+	v.callsLimiter.Reset()
 }
 
 // User returns the visitor user, or nil if there is none
@@ -334,11 +372,11 @@ func (v *visitor) SetUser(u *user.User) {
 	shouldResetLimiters := v.user.TierID() != u.TierID() // TierID works with nil receiver
 	v.user = u                                           // u may be nil!
 	if shouldResetLimiters {
-		var messages, emails int64
+		var messages, emails, sms, calls int64
 		if u != nil {
-			messages, emails = u.Stats.Messages, u.Stats.Emails
+			messages, emails, sms, calls = u.Stats.Messages, u.Stats.Emails, u.Stats.SMS, u.Stats.Calls
 		}
-		v.resetLimitersNoLock(messages, emails, true)
+		v.resetLimitersNoLock(messages, emails, sms, calls, true)
 	}
 }
 
@@ -353,11 +391,13 @@ func (v *visitor) MaybeUserID() string {
 	return ""
 }
 
-func (v *visitor) resetLimitersNoLock(messages, emails int64, enqueueUpdate bool) {
+func (v *visitor) resetLimitersNoLock(messages, emails, sms, calls int64, enqueueUpdate bool) {
 	limits := v.limitsNoLock()
 	v.requestLimiter = rate.NewLimiter(limits.RequestLimitReplenish, limits.RequestLimitBurst)
 	v.messagesLimiter = util.NewFixedLimiterWithValue(limits.MessageLimit, messages)
 	v.emailsLimiter = util.NewRateLimiterWithValue(limits.EmailLimitReplenish, limits.EmailLimitBurst, emails)
+	v.smsLimiter = util.NewFixedLimiterWithValue(limits.SMSLimit, sms)
+	v.callsLimiter = util.NewFixedLimiterWithValue(limits.CallLimit, calls)
 	v.bandwidthLimiter = util.NewBytesLimiter(int(limits.AttachmentBandwidthLimit), oneDay)
 	if v.user == nil {
 		v.accountLimiter = rate.NewLimiter(rate.Every(v.config.VisitorAccountCreationLimitReplenish), v.config.VisitorAccountCreationLimitBurst)
@@ -370,6 +410,8 @@ func (v *visitor) resetLimitersNoLock(messages, emails int64, enqueueUpdate bool
 		go v.userManager.EnqueueUserStats(v.user.ID, &user.Stats{
 			Messages: messages,
 			Emails:   emails,
+			SMS:      sms,
+			Calls:    calls,
 		})
 	}
 	log.Fields(v.contextNoLock()).Debug("Rate limiters reset for visitor") // Must be after function, because contextNoLock() describes rate limiters
@@ -398,6 +440,8 @@ func tierBasedVisitorLimits(conf *Config, tier *user.Tier) *visitorLimits {
 		EmailLimit:               tier.EmailLimit,
 		EmailLimitBurst:          util.MinMax(int(float64(tier.EmailLimit)*visitorEmailLimitBurstRate), conf.VisitorEmailLimitBurst, visitorEmailLimitBurstMax),
 		EmailLimitReplenish:      dailyLimitToRate(tier.EmailLimit),
+		SMSLimit:                 tier.SMSLimit,
+		CallLimit:                tier.CallLimit,
 		ReservationsLimit:        tier.ReservationLimit,
 		AttachmentTotalSizeLimit: tier.AttachmentTotalSizeLimit,
 		AttachmentFileSizeLimit:  tier.AttachmentFileSizeLimit,
@@ -420,6 +464,8 @@ func configBasedVisitorLimits(conf *Config) *visitorLimits {
 		EmailLimit:               replenishDurationToDailyLimit(conf.VisitorEmailLimitReplenish), // Approximation!
 		EmailLimitBurst:          conf.VisitorEmailLimitBurst,
 		EmailLimitReplenish:      rate.Every(conf.VisitorEmailLimitReplenish),
+		SMSLimit:                 int64(conf.VisitorSMSDailyLimit),
+		CallLimit:                int64(conf.VisitorCallDailyLimit),
 		ReservationsLimit:        visitorDefaultReservationsLimit,
 		AttachmentTotalSizeLimit: conf.VisitorAttachmentTotalSizeLimit,
 		AttachmentFileSizeLimit:  conf.AttachmentFileSizeLimit,
@@ -465,12 +511,18 @@ func (v *visitor) Info() (*visitorInfo, error) {
 func (v *visitor) infoLightNoLock() *visitorInfo {
 	messages := v.messagesLimiter.Value()
 	emails := v.emailsLimiter.Value()
+	sms := v.smsLimiter.Value()
+	calls := v.callsLimiter.Value()
 	limits := v.limitsNoLock()
 	stats := &visitorStats{
 		Messages:          messages,
 		MessagesRemaining: zeroIfNegative(limits.MessageLimit - messages),
 		Emails:            emails,
 		EmailsRemaining:   zeroIfNegative(limits.EmailLimit - emails),
+		SMS:               sms,
+		SMSRemaining:      zeroIfNegative(limits.SMSLimit - sms),
+		Calls:             calls,
+		CallsRemaining:    zeroIfNegative(limits.CallLimit - calls),
 	}
 	return &visitorInfo{
 		Limits: limits,

user/manager.go

@@ -55,6 +55,8 @@ const (
 			messages_limit INT NOT NULL,
 			messages_expiry_duration INT NOT NULL,
 			emails_limit INT NOT NULL,
+			sms_limit INT NOT NULL,
+			calls_limit INT NOT NULL,
 			reservations_limit INT NOT NULL,
 			attachment_file_size_limit INT NOT NULL,
 			attachment_total_size_limit INT NOT NULL,
@@ -76,6 +78,8 @@ const (
 			sync_topic TEXT NOT NULL,
 			stats_messages INT NOT NULL DEFAULT (0),
 			stats_emails INT NOT NULL DEFAULT (0),
+			stats_sms INT NOT NULL DEFAULT (0),
+			stats_calls INT NOT NULL DEFAULT (0),
 			stripe_customer_id TEXT,
 			stripe_subscription_id TEXT,
 			stripe_subscription_status TEXT,
@@ -123,26 +127,26 @@ const (
 	`
 
 	selectUserByIDQuery = `
-		SELECT u.id, u.user, u.pass, u.role, u.prefs, u.sync_topic, u.stats_messages, u.stats_emails, u.stripe_customer_id, u.stripe_subscription_id, u.stripe_subscription_status, u.stripe_subscription_interval, u.stripe_subscription_paid_until, u.stripe_subscription_cancel_at, deleted, t.id, t.code, t.name, t.messages_limit, t.messages_expiry_duration, t.emails_limit, t.reservations_limit, t.attachment_file_size_limit, t.attachment_total_size_limit, t.attachment_expiry_duration, t.attachment_bandwidth_limit, t.stripe_monthly_price_id, t.stripe_yearly_price_id
+		SELECT u.id, u.user, u.pass, u.role, u.prefs, u.sync_topic, u.stats_messages, u.stats_emails, u.stats_sms, u.stats_calls, u.stripe_customer_id, u.stripe_subscription_id, u.stripe_subscription_status, u.stripe_subscription_interval, u.stripe_subscription_paid_until, u.stripe_subscription_cancel_at, deleted, t.id, t.code, t.name, t.messages_limit, t.messages_expiry_duration, t.emails_limit, t.reservations_limit, t.attachment_file_size_limit, t.attachment_total_size_limit, t.attachment_expiry_duration, t.attachment_bandwidth_limit, t.stripe_monthly_price_id, t.stripe_yearly_price_id
 		FROM user u
 		LEFT JOIN tier t on t.id = u.tier_id
 		WHERE u.id = ?
 	`
 	selectUserByNameQuery = `
-		SELECT u.id, u.user, u.pass, u.role, u.prefs, u.sync_topic, u.stats_messages, u.stats_emails, u.stripe_customer_id, u.stripe_subscription_id, u.stripe_subscription_status, u.stripe_subscription_interval, u.stripe_subscription_paid_until, u.stripe_subscription_cancel_at, deleted, t.id, t.code, t.name, t.messages_limit, t.messages_expiry_duration, t.emails_limit, t.reservations_limit, t.attachment_file_size_limit, t.attachment_total_size_limit, t.attachment_expiry_duration, t.attachment_bandwidth_limit, t.stripe_monthly_price_id, t.stripe_yearly_price_id
+		SELECT u.id, u.user, u.pass, u.role, u.prefs, u.sync_topic, u.stats_messages, u.stats_emails, u.stats_sms, u.stats_calls, u.stripe_customer_id, u.stripe_subscription_id, u.stripe_subscription_status, u.stripe_subscription_interval, u.stripe_subscription_paid_until, u.stripe_subscription_cancel_at, deleted, t.id, t.code, t.name, t.messages_limit, t.messages_expiry_duration, t.emails_limit, t.reservations_limit, t.attachment_file_size_limit, t.attachment_total_size_limit, t.attachment_expiry_duration, t.attachment_bandwidth_limit, t.stripe_monthly_price_id, t.stripe_yearly_price_id
 		FROM user u
 		LEFT JOIN tier t on t.id = u.tier_id
 		WHERE user = ?
 	`
 	selectUserByTokenQuery = `
-		SELECT u.id, u.user, u.pass, u.role, u.prefs, u.sync_topic, u.stats_messages, u.stats_emails, u.stripe_customer_id, u.stripe_subscription_id, u.stripe_subscription_status, u.stripe_subscription_interval, u.stripe_subscription_paid_until, u.stripe_subscription_cancel_at, deleted, t.id, t.code, t.name, t.messages_limit, t.messages_expiry_duration, t.emails_limit, t.reservations_limit, t.attachment_file_size_limit, t.attachment_total_size_limit, t.attachment_expiry_duration, t.attachment_bandwidth_limit, t.stripe_monthly_price_id, t.stripe_yearly_price_id
+		SELECT u.id, u.user, u.pass, u.role, u.prefs, u.sync_topic, u.stats_messages, u.stats_emails, u.stats_sms, u.stats_calls, u.stripe_customer_id, u.stripe_subscription_id, u.stripe_subscription_status, u.stripe_subscription_interval, u.stripe_subscription_paid_until, u.stripe_subscription_cancel_at, deleted, t.id, t.code, t.name, t.messages_limit, t.messages_expiry_duration, t.emails_limit, t.reservations_limit, t.attachment_file_size_limit, t.attachment_total_size_limit, t.attachment_expiry_duration, t.attachment_bandwidth_limit, t.stripe_monthly_price_id, t.stripe_yearly_price_id
 		FROM user u
 		JOIN user_token tk on u.id = tk.user_id
 		LEFT JOIN tier t on t.id = u.tier_id
 		WHERE tk.token = ? AND (tk.expires = 0 OR tk.expires >= ?)
 	`
 	selectUserByStripeCustomerIDQuery = `
-		SELECT u.id, u.user, u.pass, u.role, u.prefs, u.sync_topic, u.stats_messages, u.stats_emails, u.stripe_customer_id, u.stripe_subscription_id, u.stripe_subscription_status, u.stripe_subscription_interval, u.stripe_subscription_paid_until, u.stripe_subscription_cancel_at, deleted, t.id, t.code, t.name, t.messages_limit, t.messages_expiry_duration, t.emails_limit, t.reservations_limit, t.attachment_file_size_limit, t.attachment_total_size_limit, t.attachment_expiry_duration, t.attachment_bandwidth_limit, t.stripe_monthly_price_id, t.stripe_yearly_price_id
+		SELECT u.id, u.user, u.pass, u.role, u.prefs, u.sync_topic, u.stats_messages, u.stats_emails, u.stats_sms, u.stats_calls, u.stripe_customer_id, u.stripe_subscription_id, u.stripe_subscription_status, u.stripe_subscription_interval, u.stripe_subscription_paid_until, u.stripe_subscription_cancel_at, deleted, t.id, t.code, t.name, t.messages_limit, t.messages_expiry_duration, t.emails_limit, t.reservations_limit, t.attachment_file_size_limit, t.attachment_total_size_limit, t.attachment_expiry_duration, t.attachment_bandwidth_limit, t.stripe_monthly_price_id, t.stripe_yearly_price_id
 		FROM user u
 		LEFT JOIN tier t on t.id = u.tier_id
 		WHERE u.stripe_customer_id = ?
@@ -173,8 +177,8 @@ const (
 	updateUserPassQuery          = `UPDATE user SET pass = ? WHERE user = ?`
 	updateUserRoleQuery          = `UPDATE user SET role = ? WHERE user = ?`
 	updateUserPrefsQuery         = `UPDATE user SET prefs = ? WHERE id = ?`
-	updateUserStatsQuery         = `UPDATE user SET stats_messages = ?, stats_emails = ? WHERE id = ?`
-	updateUserStatsResetAllQuery = `UPDATE user SET stats_messages = 0, stats_emails = 0`
+	updateUserStatsQuery         = `UPDATE user SET stats_messages = ?, stats_emails = ?, stats_sms = ?, stats_calls = ? WHERE id = ?`
+	updateUserStatsResetAllQuery = `UPDATE user SET stats_messages = 0, stats_emails = 0, stats_sms = 0, stats_calls = 0`
 	updateUserDeletedQuery       = `UPDATE user SET deleted = ? WHERE id = ?`
 	deleteUsersMarkedQuery       = `DELETE FROM user WHERE deleted < ?`
 	deleteUserQuery              = `DELETE FROM user WHERE user = ?`
@@ -258,25 +262,25 @@ const (
 	`
 
 	insertTierQuery = `
-		INSERT INTO tier (id, code, name, messages_limit, messages_expiry_duration, emails_limit, reservations_limit, attachment_file_size_limit, attachment_total_size_limit, attachment_expiry_duration, attachment_bandwidth_limit, stripe_monthly_price_id, stripe_yearly_price_id)
-		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		INSERT INTO tier (id, code, name, messages_limit, messages_expiry_duration, emails_limit, sms_limit, calls_limit, reservations_limit, attachment_file_size_limit, attachment_total_size_limit, attachment_expiry_duration, attachment_bandwidth_limit, stripe_monthly_price_id, stripe_yearly_price_id)
+		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
 	`
 	updateTierQuery = `
 		UPDATE tier
-		SET name = ?, messages_limit = ?, messages_expiry_duration = ?, emails_limit = ?, reservations_limit = ?, attachment_file_size_limit = ?, attachment_total_size_limit = ?, attachment_expiry_duration = ?, attachment_bandwidth_limit = ?, stripe_monthly_price_id = ?, stripe_yearly_price_id = ?
+		SET name = ?, messages_limit = ?, messages_expiry_duration = ?, emails_limit = ?, sms_limit = ?, calls_limit = ?, reservations_limit = ?, attachment_file_size_limit = ?, attachment_total_size_limit = ?, attachment_expiry_duration = ?, attachment_bandwidth_limit = ?, stripe_monthly_price_id = ?, stripe_yearly_price_id = ?
 		WHERE code = ?
 	`
 	selectTiersQuery = `
-		SELECT id, code, name, messages_limit, messages_expiry_duration, emails_limit, reservations_limit, attachment_file_size_limit, attachment_total_size_limit, attachment_expiry_duration, attachment_bandwidth_limit, stripe_monthly_price_id, stripe_yearly_price_id
+		SELECT id, code, name, messages_limit, messages_expiry_duration, emails_limit, sms_limit, calls_limit, reservations_limit, attachment_file_size_limit, attachment_total_size_limit, attachment_expiry_duration, attachment_bandwidth_limit, stripe_monthly_price_id, stripe_yearly_price_id
 		FROM tier
 	`
 	selectTierByCodeQuery = `
-		SELECT id, code, name, messages_limit, messages_expiry_duration, emails_limit, reservations_limit, attachment_file_size_limit, attachment_total_size_limit, attachment_expiry_duration, attachment_bandwidth_limit, stripe_monthly_price_id, stripe_yearly_price_id
+		SELECT id, code, name, messages_limit, messages_expiry_duration, emails_limit, sms_limit, calls_limit, reservations_limit, attachment_file_size_limit, attachment_total_size_limit, attachment_expiry_duration, attachment_bandwidth_limit, stripe_monthly_price_id, stripe_yearly_price_id
 		FROM tier
 		WHERE code = ?
 	`
 	selectTierByPriceIDQuery = `
-		SELECT id, code, name, messages_limit, messages_expiry_duration, emails_limit, reservations_limit, attachment_file_size_limit, attachment_total_size_limit, attachment_expiry_duration, attachment_bandwidth_limit, stripe_monthly_price_id, stripe_yearly_price_id
+		SELECT id, code, name, messages_limit, messages_expiry_duration, emails_limit, sms_limit, calls_limit, reservations_limit, attachment_file_size_limit, attachment_total_size_limit, attachment_expiry_duration, attachment_bandwidth_limit, stripe_monthly_price_id, stripe_yearly_price_id
 		FROM tier
 		WHERE (stripe_monthly_price_id = ? OR stripe_yearly_price_id = ?)
 	`
@@ -293,7 +297,7 @@ const (
 
 // Schema management queries
 const (
-	currentSchemaVersion     = 3
+	currentSchemaVersion     = 4
 	insertSchemaVersion      = `INSERT INTO schemaVersion VALUES (1, ?)`
 	updateSchemaVersion      = `UPDATE schemaVersion SET version = ? WHERE id = 1`
 	selectSchemaVersionQuery = `SELECT version FROM schemaVersion WHERE id = 1`
@@ -391,12 +395,21 @@ const (
 		CREATE UNIQUE INDEX idx_tier_stripe_monthly_price_id ON tier (stripe_monthly_price_id);
 		CREATE UNIQUE INDEX idx_tier_stripe_yearly_price_id ON tier (stripe_yearly_price_id);
 	`
+
+	// 3 -> 4
+	migrate3To4UpdateQueries = `
+		ALTER TABLE tier ADD COLUMN sms_limit INT NOT NULL DEFAULT (0);
+		ALTER TABLE tier ADD COLUMN calls_limit INT NOT NULL DEFAULT (0);
+		ALTER TABLE user ADD COLUMN stats_sms INT NOT NULL DEFAULT (0);
+		ALTER TABLE user ADD COLUMN stats_calls INT NOT NULL DEFAULT (0);
+	`
 )
 
 var (
 	migrations = map[int]func(db *sql.DB) error{
 		1: migrateFrom1,
 		2: migrateFrom2,
+		3: migrateFrom3,
 	}
 )
 
@@ -700,9 +713,11 @@ func (a *Manager) writeUserStatsQueue() error {
 				"user_id":        userID,
 				"messages_count": update.Messages,
 				"emails_count":   update.Emails,
+				"sms_count":      update.SMS,
+				"calls_count":    update.Calls,
 			}).
 			Trace("Updating stats for user %s", userID)
-		if _, err := tx.Exec(updateUserStatsQuery, update.Messages, update.Emails, userID); err != nil {
+		if _, err := tx.Exec(updateUserStatsQuery, update.Messages, update.Emails, update.SMS, update.Calls, userID); err != nil {
 			return err
 		}
 	}
@@ -911,12 +926,12 @@ func (a *Manager) readUser(rows *sql.Rows) (*User, error) {
 	defer rows.Close()
 	var id, username, hash, role, prefs, syncTopic string
 	var stripeCustomerID, stripeSubscriptionID, stripeSubscriptionStatus, stripeSubscriptionInterval, stripeMonthlyPriceID, stripeYearlyPriceID, tierID, tierCode, tierName sql.NullString
-	var messages, emails int64
+	var messages, emails, sms, calls int64
 	var messagesLimit, messagesExpiryDuration, emailsLimit, reservationsLimit, attachmentFileSizeLimit, attachmentTotalSizeLimit, attachmentExpiryDuration, attachmentBandwidthLimit, stripeSubscriptionPaidUntil, stripeSubscriptionCancelAt, deleted sql.NullInt64
 	if !rows.Next() {
 		return nil, ErrUserNotFound
 	}
-	if err := rows.Scan(&id, &username, &hash, &role, &prefs, &syncTopic, &messages, &emails, &stripeCustomerID, &stripeSubscriptionID, &stripeSubscriptionStatus, &stripeSubscriptionInterval, &stripeSubscriptionPaidUntil, &stripeSubscriptionCancelAt, &deleted, &tierID, &tierCode, &tierName, &messagesLimit, &messagesExpiryDuration, &emailsLimit, &reservationsLimit, &attachmentFileSizeLimit, &attachmentTotalSizeLimit, &attachmentExpiryDuration, &attachmentBandwidthLimit, &stripeMonthlyPriceID, &stripeYearlyPriceID); err != nil {
+	if err := rows.Scan(&id, &username, &hash, &role, &prefs, &syncTopic, &messages, &emails, &sms, &calls, &stripeCustomerID, &stripeSubscriptionID, &stripeSubscriptionStatus, &stripeSubscriptionInterval, &stripeSubscriptionPaidUntil, &stripeSubscriptionCancelAt, &deleted, &tierID, &tierCode, &tierName, &messagesLimit, &messagesExpiryDuration, &emailsLimit, &reservationsLimit, &attachmentFileSizeLimit, &attachmentTotalSizeLimit, &attachmentExpiryDuration, &attachmentBandwidthLimit, &stripeMonthlyPriceID, &stripeYearlyPriceID); err != nil {
 		return nil, err
 	} else if err := rows.Err(); err != nil {
 		return nil, err
@@ -931,6 +946,8 @@ func (a *Manager) readUser(rows *sql.Rows) (*User, error) {
 		Stats: &Stats{
 			Messages: messages,
 			Emails:   emails,
+			SMS:      sms,
+			Calls:    calls,
 		},
 		Billing: &Billing{
 			StripeCustomerID:            stripeCustomerID.String,                                          // May be empty
@@ -1259,7 +1276,7 @@ func (a *Manager) AddTier(tier *Tier) error {
 	if tier.ID == "" {
 		tier.ID = util.RandomStringPrefix(tierIDPrefix, tierIDLength)
 	}
-	if _, err := a.db.Exec(insertTierQuery, tier.ID, tier.Code, tier.Name, tier.MessageLimit, int64(tier.MessageExpiryDuration.Seconds()), tier.EmailLimit, tier.ReservationLimit, tier.AttachmentFileSizeLimit, tier.AttachmentTotalSizeLimit, int64(tier.AttachmentExpiryDuration.Seconds()), tier.AttachmentBandwidthLimit, nullString(tier.StripeMonthlyPriceID), nullString(tier.StripeYearlyPriceID)); err != nil {
+	if _, err := a.db.Exec(insertTierQuery, tier.ID, tier.Code, tier.Name, tier.MessageLimit, int64(tier.MessageExpiryDuration.Seconds()), tier.EmailLimit, tier.SMSLimit, tier.CallLimit, tier.ReservationLimit, tier.AttachmentFileSizeLimit, tier.AttachmentTotalSizeLimit, int64(tier.AttachmentExpiryDuration.Seconds()), tier.AttachmentBandwidthLimit, nullString(tier.StripeMonthlyPriceID), nullString(tier.StripeYearlyPriceID)); err != nil {
 		return err
 	}
 	return nil
@@ -1267,7 +1284,7 @@ func (a *Manager) AddTier(tier *Tier) error {
 
 // UpdateTier updates a tier's properties in the database
 func (a *Manager) UpdateTier(tier *Tier) error {
-	if _, err := a.db.Exec(updateTierQuery, tier.Name, tier.MessageLimit, int64(tier.MessageExpiryDuration.Seconds()), tier.EmailLimit, tier.ReservationLimit, tier.AttachmentFileSizeLimit, tier.AttachmentTotalSizeLimit, int64(tier.AttachmentExpiryDuration.Seconds()), tier.AttachmentBandwidthLimit, nullString(tier.StripeMonthlyPriceID), nullString(tier.StripeYearlyPriceID), tier.Code); err != nil {
+	if _, err := a.db.Exec(updateTierQuery, tier.Name, tier.MessageLimit, int64(tier.MessageExpiryDuration.Seconds()), tier.EmailLimit, tier.SMSLimit, tier.CallLimit, tier.ReservationLimit, tier.AttachmentFileSizeLimit, tier.AttachmentTotalSizeLimit, int64(tier.AttachmentExpiryDuration.Seconds()), tier.AttachmentBandwidthLimit, nullString(tier.StripeMonthlyPriceID), nullString(tier.StripeYearlyPriceID), tier.Code); err != nil {
 		return err
 	}
 	return nil
@@ -1336,11 +1353,11 @@ func (a *Manager) TierByStripePrice(priceID string) (*Tier, error) {
 func (a *Manager) readTier(rows *sql.Rows) (*Tier, error) {
 	var id, code, name string
 	var stripeMonthlyPriceID, stripeYearlyPriceID sql.NullString
-	var messagesLimit, messagesExpiryDuration, emailsLimit, reservationsLimit, attachmentFileSizeLimit, attachmentTotalSizeLimit, attachmentExpiryDuration, attachmentBandwidthLimit sql.NullInt64
+	var messagesLimit, messagesExpiryDuration, emailsLimit, smsLimit, callsLimit, reservationsLimit, attachmentFileSizeLimit, attachmentTotalSizeLimit, attachmentExpiryDuration, attachmentBandwidthLimit sql.NullInt64
 	if !rows.Next() {
 		return nil, ErrTierNotFound
 	}
-	if err := rows.Scan(&id, &code, &name, &messagesLimit, &messagesExpiryDuration, &emailsLimit, &reservationsLimit, &attachmentFileSizeLimit, &attachmentTotalSizeLimit, &attachmentExpiryDuration, &attachmentBandwidthLimit, &stripeMonthlyPriceID, &stripeYearlyPriceID); err != nil {
+	if err := rows.Scan(&id, &code, &name, &messagesLimit, &messagesExpiryDuration, &emailsLimit, &smsLimit, &callsLimit, &reservationsLimit, &attachmentFileSizeLimit, &attachmentTotalSizeLimit, &attachmentExpiryDuration, &attachmentBandwidthLimit, &stripeMonthlyPriceID, &stripeYearlyPriceID); err != nil {
 		return nil, err
 	} else if err := rows.Err(); err != nil {
 		return nil, err
@@ -1353,6 +1370,8 @@ func (a *Manager) readTier(rows *sql.Rows) (*Tier, error) {
 		MessageLimit:             messagesLimit.Int64,
 		MessageExpiryDuration:    time.Duration(messagesExpiryDuration.Int64) * time.Second,
 		EmailLimit:               emailsLimit.Int64,
+		SMSLimit:                 smsLimit.Int64,
+		CallLimit:                callsLimit.Int64,
 		ReservationLimit:         reservationsLimit.Int64,
 		AttachmentFileSizeLimit:  attachmentFileSizeLimit.Int64,
 		AttachmentTotalSizeLimit: attachmentTotalSizeLimit.Int64,
@@ -1495,6 +1514,22 @@ func migrateFrom2(db *sql.DB) error {
 	return tx.Commit()
 }
 
+func migrateFrom3(db *sql.DB) error {
+	log.Tag(tag).Info("Migrating user database schema: from 3 to 4")
+	tx, err := db.Begin()
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+	if _, err := tx.Exec(migrate3To4UpdateQueries); err != nil {
+		return err
+	}
+	if _, err := tx.Exec(updateSchemaVersion, 4); err != nil {
+		return err
+	}
+	return tx.Commit()
+}
+
 func nullString(s string) sql.NullString {
 	if s == "" {
 		return sql.NullString{}

user/types.go

@@ -86,6 +86,8 @@ type Tier struct {
 	MessageLimit             int64         // Daily message limit
 	MessageExpiryDuration    time.Duration // Cache duration for messages
 	EmailLimit               int64         // Daily email limit
+	SMSLimit                 int64         // Daily SMS limit
+	CallLimit                int64         // Daily phone call limit
 	ReservationLimit         int64         // Number of topic reservations allowed by user
 	AttachmentFileSizeLimit  int64         // Max file size per file (bytes)
 	AttachmentTotalSizeLimit int64         // Total file size for all files of this user (bytes)
@@ -131,6 +133,8 @@ type NotificationPrefs struct {
 type Stats struct {
 	Messages int64
 	Emails   int64
+	SMS      int64
+	Calls    int64
 }
 
 // Billing is a struct holding a user's billing information