Forum Discussion
Planner task comments no longer send email notifications – critical regression
This change removed a previously existing core functionality without providing an adequate replacement. With the new Planner experience, task comments no longer trigger automatic email notifications...
We recently saw identical behavior in other Microsoft 365 installations. In many situations, the problem was due to notification sync delays or backend changes in Planner/Exchange Online rather than user settings. It's worth checking to see if email notifications are still enabled in Planner settings, and if affected users are receiving any other M365 alerts normally. We used Teams activity notifications as a temporary workaround until Microsoft fixed the sync issue.