How to mention a user/group in a new message to a channel?

Question

I checked the samples/API references here:

• https://msdn.microsoft.com/en-us/microsoft-teams/connectors
• https://dev.outlook.com/Connectors/GetStarted

Answer 1

Programmatic @mentions are not currently supported by Microsoft Teams, and will probably not come soon.

There is such a wish from the community in the MS uservoice portal, but it seems not to burn as much as other issues: