The “From” field is needed in order to send emails from a different email address, such as for a shared mailbox, or on behalf of a different person. Please note that you must be granted access permissions to “send from” or “send on behalf of” a different email address. 


  1. Enable the From field in Outlook In Outlook, open a new email and select Options tab > Show Fields > From to enable the From field.
  2. Select an email to send From Once the From field is enabled, select the From dropdown > Other Email Address. A pop-up box will appear for Send from Other Email Address. 
  3. Type in the email address you want to send from and select OK. Confirm the email address in the From field has changed.
  4. Once you have typed in the new email and selected OK, the pop-up box will close and return you back to the new email. Check what email address appears under the From field, to confirm the email address has changed.