I'm trying to figure out a peculiar situation with mass emails sent from Microsoft 365. I have admin access, and the permissions for the user to send emails as someone else are set correctly. In my scenario, let's say 'User01' is sending an email as 'User02' to multiple recipients using the BCC field. While some people receive it showing 'User01 sent on behalf of User02', others see just 'User02 sent the email.' This is happening in Outlook Classic. I've checked everything, and it seems that when I send to external accounts like Gmail, it works correctly. I'm curious if this discrepancy is due to some filters that change the way the email is displayed for different clients. I would love to get insights on what's going wrong here and how I might resolve it!
1 Answer
Honestly, it might be a simple error between the chair and the keyboard! If they’re using a specific template, that might hold onto some cached information that causes this. It’s interesting that some recipients see one thing and others see something different, though. You might want to consider reaching out to Microsoft support for further help because this seems like a trickier problem than expected.

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