If you receive a notification about Yammer conversations in OWA, you might notice that you can now do all sorts of new things to interact with Yammer while remaining in OWA. It’s part of Microsoft’s effort to make Yammer more relevant and accessible to people who prefer to communicate through email. And the nice thing is that the approach works well.
https://office365itpros.com/2020/02/14/interactive-yammer-notifications-owa/
