#mention via incoming webhook in MS Teams - microsoft-teams

Question

I'm trying to mention a user from an incoming webhook.
I tried a few iterations via Postman of
{
"text": "test #user"
}
or
{
"text": "test #user#email.com"
}
but none of these seem to work.
Is this simple but very important thing just not possible?
Thanks.

Answer 1

I'm afraid this isn't possible yet - the only way to do # mentions is by using the full Bot Framework APIs.
You're not the only one to have asked for this though, so I'll get it on the backlog.

Answer 2

This is now supported and documented here (https://learn.microsoft.com/en-us/microsoftteams/platform/task-modules-and-cards/cards/cards-format?tabs=adaptive-md%2Cconnector-html#user-mention-in-incoming-webhook-with-adaptive-cards).
Sample:
{
"type": "message",
"attachments": [
{
"contentType": "application/vnd.microsoft.card.adaptive",
"content": {
"type": "AdaptiveCard",
"body": [
{
"type": "TextBlock",
"size": "Medium",
"weight": "Bolder",
"text": "Sample Adaptive Card with User Mention"
},
{
"type": "TextBlock",
"text": "Hi <at>Adele UPN</at>, <at>Adele AAD</at>"
}
],
"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
"version": "1.0",
"msteams": {
"entities": [
{
"type": "mention",
"text": "<at>Adele UPN</at>",
"mentioned": {
"id": "AdeleV#contoso.onmicrosoft.com",
"name": "Adele Vance"
}
},
{
"type": "mention",
"text": "<at>Adele AAD</at>",
"mentioned": {
"id": "87d349ed-44d7-43e1-9a83-5f2406dee5bd",
"name": "Adele Vance"
}
}
]
}
}
}]
}

Answer 3

If it helps anybody, after looking in to this and seeing it couldn't be done (still!?), a workaround for me was to change the channel notification settings to banner + feed for all new posts for relevant users in the channel. This eliminates the need to use the tag (if tagging the team).

Answer 4

It is supported in Teams now, however the sample code does not work in Microsoft card playground, I didn't know the code actually worked until I tried in Postman.