Whenever a conversation is marked as unread, an event is sent on the RTM API as message:acknowledge:unread:send. Check out the reference for this event.

A new REST API route has been added to mark a conversation as unread. Check out this new route.

Whenever an error occurs on a session, such as attempting to set an invalid email address, an event is sent on the RTM API as session:error. Check out the reference for this event.

Whenever a message delivery is ignored, such as ignored email deliveries, an event is sent on the RTM API as message:acknowledge:ignored. Check out the reference for this event.