Sending E-mail for Someone Else (Send on Behalf of mailbox owner)

If you need to send E-mails out on behalf of someone else on the From: line (e.g. your boss) there are a couple methods which will work.

If you have Full Mailbox Access permissions on their mailbox (aka "super-delegate").
 

Once you have already been given Full Mailbox Access (aka "super-delegate") as described here, you need to open that mailbox by listing it as an additional mailbox as part of your Outlook folder tree.   Then, it's as simple as displaying the From: field and typing the other person's name.

In the e-mail compose window:

• Select View menu;
• Select From Field;
• Now you can type the other person's name on the From line;
• The e-mail will arrive looking just as if the other person sent it.
   

If you only need Partial Mailbox access on their mailbox (aka "ordinary-delegate").

If you only need partial mailbox access, then you'll need the other person to make you a Delegate on their e-mail.

  Please ask the other person to grant you Delegate access from his/her Outlook client.  Here's a description and instructions on how to do this. 
 

After you are listed as a Delegate on their Inbox you will be able to send e-mails On Behalf Of them.  In the e-mail compose window:

• Select View menu;
• Select From Field;
• Now you can type the other person's name on the From line;
• The e-mail will arrive at the destination with a From address looking something like this: Your Name [on behalf of His/her Name].