Forum Discussion
You are not authorized to send mail on behalf of the specified sending account.
Hi IMJMel,
The error message "You are not authorized to send mail on behalf of the specified sending account" suggests that there might be permission or configuration issues.
As far as I know, you won't be able to send emails from different email addresses with Power Automate without the permissions to do so for each mailbox. This is another article that came to the same conclusion: Using Flows Send as form submitter
What you can double check is following:
Check Permissions: Make sure that all team members who need to send emails through the Flow have the necessary permissions. Verify the settings for the sending account and ensure that the team members have the right authorization.
Review Connection Settings: Since this is a shared flow, it's important to check the connection settings. Ensure that the connection used in the Flow is configured with the correct account that has the authority to send emails on behalf of others. View the permissions of your outlook (Office 365) connector.
Update Flow Configuration: In the Send an email (V2) action, double-check that the "From (Send as)" field is correctly fetching the user profile for each team member. Confirm that the values are retrieved accurately and that the correct email address is used for each person.
Test Individual Flows: As a troubleshooting step, consider creating separate flows for each team member instead of using a shared flow. This can help identify any specific permission or configuration issues related to individual accounts.
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Kindest regards,
Leon Pavesic