Properties and Constraints

Review CometChat Notification API properties and constraints for push, email, SMS, providers, preferences, and templates.

Properties and constraints for the Notification APIs.

Push Notifications

Property	Constraints
Maximum FCM providers per app	Contact support for limits
Maximum APNS providers per app	Contact support for limits
Maximum push tokens per user	100 active tokens
Push token value	Max 4,096 characters

Email Notifications

Property	Constraints
SendGrid API key	Required for SendGrid provider
Custom provider webhook URL	Must be a valid HTTPS URL

SMS Notifications

Property	Constraints
Twilio Account SID	Required for Twilio provider
Twilio Auth Token	Required for Twilio provider
Custom provider webhook URL	Must be a valid HTTPS URL