The table describes current Messenger feature readiness across Web Messenger, Mobile Transport SDK, and Mobile Messenger.

  Supported     |      Not currently supported

Feature

Web

Transport SDK Mobile Messenger SDK

Async messaging

Async Push Notifications
Authenticated Messaging 
Cards
Carousels
Clear Conversation
Conversation Auto-Start
Conversation Disconnect
Content Profile Support for Inbound Attachments

Content Profile Support for Outbound Attachments
Custom Attributes
Home Screen
Knowledge Search App
Localization
Participant Name and Avatar
Proactive Offers
Quick Replies
Typing Indicators