Add billing-contact config option

server/config.go

@@ -128,6 +128,7 @@ type Config struct {
 	StripeSecretKey                      string
 	StripeWebhookKey                     string
 	StripePriceCacheDuration             time.Duration
+	BillingContact                       string
 	EnableWeb                            bool
 	EnableSignup                         bool // Enable creation of accounts via API and UI
 	EnableLogin                          bool

server/server.go

@@ -485,6 +485,7 @@ func (s *Server) handleWebConfig(w http.ResponseWriter, _ *http.Request, _ *visi
 		EnableSignup:       s.config.EnableSignup,
 		EnablePayments:     s.config.StripeSecretKey != "",
 		EnableReservations: s.config.EnableReservations,
+		BillingContact:     s.config.BillingContact,
 		DisallowedTopics:   s.config.DisallowedTopics,
 	}
 	b, err := json.MarshalIndent(response, "", "  ")

server/server.yml

@@ -240,9 +240,12 @@
 #   enables payments in the ntfy web app (e.g. Upgrade dialog). See https://dashboard.stripe.com/apikeys.
 # - stripe-webhook-key is the key required to validate the authenticity of incoming webhooks from Stripe.
 #   Webhooks are essential up keep the local database in sync with the payment provider. See https://dashboard.stripe.com/webhooks.
+# - billing-contact is an email address or website displayed in the "Upgrade tier" dialog to let people reach
+#   out with billing questions. If unset, nothing will be displayed.
 #
 # stripe-secret-key:
 # stripe-webhook-key:
+# billing-contact:
 
 # Logging options
 #

server/types.go

@@ -341,6 +341,7 @@ type apiConfigResponse struct {
 	EnableSignup       bool     `json:"enable_signup"`
 	EnablePayments     bool     `json:"enable_payments"`
 	EnableReservations bool     `json:"enable_reservations"`
+	BillingContact     string   `json:"billing_contact"`
 	DisallowedTopics   []string `json:"disallowed_topics"`
 }