How to use Office365 plus addressing?

Super User Asked by Machiel Visser on December 8, 2020

According to this change Office 365 should support email aliases using the + sign since September this year:

I have tested the feature on 2 office 365 environments, but in both cases Office 365 returns that it cannot find the user. [username]+[tag] wasn’t found at [domain]

Am I missing something?

One Answer

Please make sure you have enabled this feature :AllowPlusAddressInRecipients

If not, this can be done through Powershell using the following command:

Set-OrganizationConfig -AllowPlusAddressInRecipients $true

More information:

Correct answer by Binggo_ MSFT on December 8, 2020

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