Plus Addressing in Exchange Online
During Ignite 2020, Microsoft announced that plus addressing was coming to Exchange Online. Plus addressing allows users to create their own unique email addresses by leveraging a plus sign in their email address—for example, firstname.lastname@example.org. Anything after the plus sign is completely at the discretion of the user.
This becomes particularly useful when you want to target newsletters to a unique email address, especially when configuring inbox rules. It is also useful to determine who might have sold or leaked your email address.
To leverage this feature, an administrator must enable it globally (by default, it is disabled). To do this, log onto Exchange Online PowerShell. First, let’s verify if plus addressing is disabled. We do this with the following command.
C:\> Get-OrganizationConfig | FL AllowPlusAddressInRecipients AllowPlusAddressInRecipients : False
From our output, we can see that plus addressing is disabled in our tenant. To enable, run the following command.
C:\> Set-OrganizationConfig -AllowPlusAddressInRecipients $true
To confirm the setting has taken effect, rerun Get-OrganizationConfig.
Users can then start leveraging plus addresses. Emails addressed to a plus address will appear in the user’s inbox without any further user intervention. From there, the user can build inbox rules for the plus addresses if they desire.[Read more…] about Exchange Online Updates (December 2020)