How to Get Send on Behalf Permissions in Exchange Online

In Exchange Online, both send as and send on behalf permissions allow a user to send emails representing another user or shared mailbox. However, these permissions have distinct differences which are discussed below.

With send as permission, a delegate can send an email from an assigned mailbox. But, the recipient will see that the email was sent by the mailbox owner, with no indication of the delegate's participation.

With send on behalf permission, a user can send an email on behalf of another user. However, the "From" line in the message indicates that the message was sent by the delegate representing the mailbox owner.

• Check the Mailbox Permission Summary report to see all mailboxes and the specific access permissions granted to users, including full access, send as, and send on behalf rights.
• Simply go to Reports»Exchange»Mailbox Permissions»Mailbox Permission Summary report.

Pro Tip: But wait, there's more! AdminDroid adds depth to mailbox permissions, offering tailored reports for both send on behalf and send as permissions. Get every detail you need, all in one place, making Exchange Online mailbox management a walk in the park for admins!

Assigning send on behalf permissions to a Microsoft 365 distribution group boosts collaboration, allowing selected members to send emails on behalf of the group. This helps streamline communications and make announcements to the entire organization or within a specific team.

To add send on behalf permissions to a distribution group in Microsoft 365, you can either use the Exchange admin center or PowerShell.

Set-DistributionGroup -Identity "distribution group" -GrantSendOnBehalfTo "delegate UPN"

Assigning the send on behalf permission to multiple mailboxes can be challenging, particularly when one delegate needs access to several accounts. To simplify this process, here's how you can assign delegate permission for multiple recipients at the same time:

Moreover, determining a delegate's mailbox access can be a time-consuming process. It often involves the manual review of each mailbox.

• You can use the Mailbox with Send on Behalf report with the "Grant Send on Behalf to - contains - Delegate name" filter to quickly identify the mailboxes and their delegates with send on behalf permissions.

Here's a helpful tip: After setting your filters, save them as a custom view. This saves you from setting up the filters every time when you need them. You can also export the report into a CSV file if you ever need the information locally or in your inbox.

A shared mailbox is a single email address that multiple people can access and use to send and receive emails. Configuring 'Send on behalf' permissions is essential for effective email management in such shared mailboxes.

For instance, granting this permission to HR team members in a shared mailbox allows them to collectively manage job applications, employee inquiries, and confidential documents. This centralized approach ensures prompt and consistent handling of all HR communications, maintaining privacy and order.

To allow users to send on behalf of a shared mailbox, follow the steps below.

• You can get detailed insights into send on behalf permissions for shared mailboxes through AdminDroid's "shared mailbox permission detail" report.
• Utilize the "Access Rights equal to Send on Behalf" filter in the Mailbox Permission Detail report to effortlessly view all send on behalf permissions applied to shared mailboxes.

Keeping an eye on send on behalf permissions for shared mailboxes is just the start! To truly secure your Exchange Online environment, it's essential to oversee all delegation permissions across your shared mailboxes.