Microsoft Outlook Office 365, how to Send From / As / On Behalf Of

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These instructions are for Outlook on the Web.

Once you have been added to role or given an alias, you should be able to send “From” the alternate alias account. For example, if my email address was Robert@example.com, but I wanted to send as Bob@example.com. As long as the administrators have set me up correctly, I now have to figure out how to set it up. The first time you do it, you sometimes have to change a setting to show the “FROM” field so that you can then add or type in the email address. I pieced together a guide with some example pictures that will hopefully be helpful!

  1. Sign in to Outlook on the web.
  2. Click on New mail to start a message > then OPTIONS above the Message > then Show From.
  3. Click on From > then Other Email Address…

This will show the From field in Outlook web and allow you to type in the email you’re sending from (bob@example.com).

  1. Fill in the Alias address.

Now you’re good to compose and send your email! Every time after this, that Alias should show up automatically so that you can click on it instead of typing it in!