How to Delegate Send on Behalf Permissions to a Mailbox

Delegating Send on Behalf permissions with Easy365Manager is very easy and supports bulk editing (configuring multiple mailboxes at the same time).

Open user properties, go to the Mailbox tab and click Mailbox Delegation:

Easy365Manager AD Users & Computers, user properties, Mailbox tab
Then add or remove the desired delegates to the Send on Behalf permissions:
Configure Send on Behalf permissions to mailbox using Easy365Manager

Click OK twice to apply the new settings.