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Helper IV
Helper IV

Send email from M365 Group's mailbox

I have a flow that creates tasks in a Planner from data submitted in an MS Form. Based on a condition, I would like to send an email to the email supplied in the submitted form which will include followup information. I saved the document in my OneDrive and shared with everyone and then get the document from there to add as an attachment in the email. The one piece I am missing is to send the email from the M365 groups mail box and not mine or a service account as I want the email conversations to continue via that mail account. Is that possible? I tried using send email (v3) but it asks me to sign up for a service and I am not sure what that means.


Accepted Solutions

Hi @AnnetteM,


did you assign yourself the "send as" right also? (Edit Microsoft 365 Group > Group Delegation) 


Welcome to my web site.

View solution in original post

Community Support
Community Support

Hi @AnnetteM ,


Does the M365 Group's mailbox means "Shared Mailbox"? 


If it is "Shared Mailbox" you need "Full Access" permission for the "Shared Mailbox" to send/interact/read emails from your Outlook application side.


Action Plan


1. Contact your Exchange admin

2. Ask to grant "Full Access" permission of the Shared Mailbox to your account: 

3. Open and use a shared mailbox in Outlook:


Hope this helps. Thanks!


Best regards,

Jisung Han

The mailbox is inherited (as the calendar) from the creation of an M365 group which is necessary to create a Planner. I am the owner of the group. I don't believe it may be the same as a traditional "shared mailbox" in exchange as the M365 group is part of the cloud.

Most Valuable Professional
Most Valuable Professional


Try using the Send an email from a shared mailbox action instead.


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I have also tried that using the M365 group's email address in the "Original Mailbox Address" field and get this message:


I also found that there is an Office 365 Groups Mail Connector ( which I think would suffice in this instance, however it is not available to GCC.
Any other ideas?

Community Champion
Community Champion

Hi @AnnetteM , just use the "Send an email (V2)" action. Populate the field "From (Send as)" and place there the address of your group.


Welcome to my web site.

As I noted above, even though I am the owner of an M365 group, I still get the message that I don't have rights to send on behalf of. M365 groups must have some nuances to them.



Hi @AnnetteM,


did you assign yourself the "send as" right also? (Edit Microsoft 365 Group > Group Delegation) 


Welcome to my web site.

Ah, that was the piece I was missing. So to summarize:

  • I added a service account as a "send as" delegate on the M365 group
  • Used "Send an email (V2)" action with the M365 groups email in the "From(Send as)" field
  • Used the service account as the connection for the "Send an email (V2)"

Thank you!

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