If you have been using a Gmail account, you may be already aware about the ‘plus address’ (or ‘plus addressing’) which allows you to dynamically create a unique email address, in addition of the ‘fixed’ ones.
Well, you can now enable this ‘plus addressing’ functionality in Exchange Online.
To do so, you need to use Exchange Online PowerShell.
Once connected to Exchange Online, run the below command to enable ‘plus addressing’
Set-OrganizationConfig -AllowPlusAddressInRecipients $true
Then your end-users can create this dynamic address by using Outlook Web Access (aka OWA, aka Outlook on the Web) by creating a new inbox rules.
To create the inbox rule, open the Gear menu (left on your name) and then choose View all Outlook settings at the bottom and finally access the Mail\Rules blade
The rule must use the below condition Recipient address includes and then define the ‘plus’ address which must include the + sign (like email@example.com)