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Change a users Primary Email Address in Office 365

28 Jun 2013 by Emma Robinson

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Sometimes you need to change a users main email address, for example if they get married and change their name.

In this scenario, you would want all email they send to originate from the new email address but you would still want them to receive email sent to the old address.

So how do you do this in Office 365?

Firstly, log in to the Office 365 Portal as an Administrator.

Now open up the Exchange Online Control Panel.

Exchange Control Panel

Exchange Control Panel

Note: If you are using Office 365 for Small Businesses follow these instructions to open the Exchange Online Control Panel.

Double click the user whose email address you want to change and click the Email Addresses link in the left-hand menu.


Click the Plus button to add a new email address

Click the Plus button to add a new email address


Click the Plus button to add a new address.

Read more: Optimizing PowerShell for large Office 365 tenants

Specify a new Email address

Specify a new Email address

Type in the new email address and tick the make this the reply address box.

The new Email Address

The new Email Address

When you click OK, you will see both the new and old address in this Email Addresses box. The one with SMTP written in capital letters is the one that will be used when mail is sent.
Mail can be received on both email addresses.

Note: The user will still need to use their old email address to log into Office 365

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