Issue
You can’t send emails by using the email quick campaign distribution list.
Reason
The issue occurs because of one of the following reasons:- The users don't have permissions to send emails on behalf of other users.
- The owner of the record (marketing list members) hasn't allowed other Dynamics 365 users to send emails on the owner's behalf.
Resolution
To resolve the issue, do one of the following:- For the user who's creating the quick campaign, the Send Email as Another User privilege must be assigned to at least one role assigned to the user.
- For the owner of the record, the Allow other Microsoft Dynamics 365 users to send email on your behalf checkbox must be selected under Select whether other users can send email for you on the Set Personal Options dialog box.