When employees in your company have more than one email alias, find out how to set these up in Office 365.
You must have admin permissions to add email aliases to a user.
In the admin center, go to the Active users page, or choose Users > Active users.
On the Active Users page, select the name of the person you want to edit.
On the right, in the Username / Email Aliases row, choose Edit.
On the Edit email addresses page, in the text box under Alias, type the first part of the new email alias. If you added your own domain to Office 365, you can choose the domain for the new email alias by using the drop-down list. Then choose Add.
When you're done, choose Save.
Wait 24 hours for the new aliases to populate throughout Office 365.
Often people in the office go by different names.
Jenna is a good example.
People keep emailing Jen. We want both email addresses to go to Jenna.
You can do this by creating aliases.
Select Users, Active users, and open Jenna's account.
Select Edit and then type jen in the box under Aliases.
Select Add, Save, and Close.
Now her emails addressed to Jen will arrive at Jenna's account.