Office 365

Sending email as an alias (proxy address) with Office 365

Sending emails in Microsoft Exchange world using an alias for an account has always been a pain. It required working with workarounds such as setting up Shared Mailbox or Distribution Groups and using SendAs permissions. For years admins around the world were asking Microsoft to change this, and finally, in April 2021, they did! It's a new feature of Office 365, and it requires action from Office 365 Administrator.

Enabling Sending as Alias in Office 365

To enable sending as an alias for all Office 365 users, you need to connect to PowerShell and enable this option. To do so, you must first install the ExchangeOnlineManagement module using the following command

Install-Module -Name ExchangeOnlineManagement -Force

Once installed, connect to your Office 365 tenant using Global Admin credentials.

Connect-ExchangeOnline

Verify the status of the Send From Alias option to make sure you know the state of it before applying any change

Get-OrganizationConfig | fl Sendfrom*

Finally, enable Send From Alias functionality for the whole tenant!

Set-OrganizationConfig -SendFromAliasEnabled $true

All that's left is some waiting time as the change propagates thru Exchange Online.

Sending as Alias in Outlook using Office 365

Once this is done all that is left is go to Outlook, and open new email.

Then, choose From, and from the list of all your emails, choose Other Email Address…

Przemyslaw Klys

System Architect with over 14 years of experience in the IT field. Skilled, among others, in Active Directory, Microsoft Exchange and Office 365. Profoundly interested in PowerShell. Software geek.

Share
Published by
Przemyslaw Klys

Recent Posts

Active Directory Replication Summary to your Email or Microsoft Teams

Active Directory replication is a critical process that ensures the consistent and up-to-date state of…

1 week ago

Syncing Global Address List (GAL) to personal contacts and between Office 365 tenants with PowerShell

Hey there! Today, I wanted to introduce you to one of the small but excellent…

5 months ago

Active Directory Health Check using Microsoft Entra Connect Health Service

Active Directory (AD) is crucial in managing identities and resources within an organization. Ensuring its…

7 months ago

Seamless HTML Report Creation: Harness the Power of Markdown with PSWriteHTML PowerShell Module

In today's digital age, the ability to create compelling and informative HTML reports and documents…

8 months ago

How to Efficiently Remove Comments from Your PowerShell Script

As part of my daily development, I create lots of code that I subsequently comment…

8 months ago

Unlocking PowerShell Magic: Different Approach to Creating ‘Empty’ PSCustomObjects

Today I saw an article from Christian Ritter, "PowerShell: Creating an "empty" PSCustomObject" on X…

9 months ago