How to send email as another account

Outlook on the web (OWA)

1. Click New Message to start an email
   
   
    
2. Click the 3-dot menu on the message screen and click "Show From"
   
   
    
3. Type the name of the address you want to send from in the "From:" line, and continue with the email. 
   
   

Outlook for Windows

1. Open a new email and navigate to the Options tab
2. Click the "From" Option in the "Show Fields" section to view the From option. 
   
   
    
3. Click the From box in the email and choose "Other email address"
   
      
    
4. Type the name of the address you wish to send from and continue with the email as normal. 

Outlook for Mac