Send and Receive Attachments from Microsoft Teams Channel Users
You can send and receive attachments when communicating with users in a Microsoft Teams channel.
To send a file as an attachment to a specific Microsoft Teams channel, use the APIs listed under: List channel messages > Permissions:
-
ChannelMessage.Read.All
-
ChannelMessage.Read.Group (uses resource-specific consent)
-
ChannelMessage.Read.All