Receiving email on alias but not able to send any emails - Outlook on the web?

Hello,

I have similar problem, I am the admin for Microsoft 365 at my organization.

Some users needs to send occasionally emails from their alias addresses.

I can't see any why to do it in Outlook Web (Works fine in Outlook 2019 app).

The instruction I could find are to go to settings, Compose and reply, Addresses to send from and choose the alias email addresses you want to use. But there is no option called Addresses to send from.

The same case:

1. In Exhange Admin: I did as advised above: "Select the checkbox next to Turn on sending from aliases."
2. In Outliook Web: There is no Addresses to send from in  Settings > Email > Compose and reply..

Seeing as this is the leading search result for people with 365 work/business accounts too.

I thought it would be useful to include the solution that will solve this issue here.

To send from Outlook for web or application.

Firstly the end user can't fix this. An admin has to resolve Step 1:

Step 1:

How to turn on sending from aliases in Admin Panel with 365.

By default, sending email from aliases is turned off. An admin needs to turn it on it in the Exchange admin center first.

Sign in to the Exchange admin center. Use your Microsoft 365 email address and password.

Select Settings, then Mail flow.

Select the checkbox next to Turn on sending from aliases.

select checkbox to turn on sending with aliases

Select Save.

Step 2:

Now the user you can send from an Alias!

Unfortunately this solution doesn't work, I have already turned on sending from alias in Exchange 365.

The problem is when I use the Outlook web interface there is no way to put my alias in the "from" field.

It does work on my outlook 2019 app, works fine, but not on 365 web interface.

I can confirm that this problem persists and it doesn't seem like there's any way to send emails from aliases anymore. On both Outlook for the web and Outlook for Mac (new), we can select an alias to send from, but the email is always sent from the primary address. This forum is full of auto-generated and AI-generated answers claiming to show how to do it, but you follow all the steps and it still doesn't work. My company is moving to using "shared mailboxes" (one per individual) as a way to do this, which is quite a workaround but could suffice. It's inexplicable and frustrating that Microsoft doesn't want to support email aliases anymore, it's been a widely used feature for more than 25 years and they won't even announce this policy change or give a reason.

Unfortunately, this is not going to get solved. The feature has been discontinued and removed by MS. Verified by talking to their support just like several others have done. Just read some of the other replies here...

Since there was no warning or notification I think this has been handled disastrously bad. And that's why I won't renew my M365 subscription. I've used this for my primary e-mail address for many years and was 100% depending on it. All suggested "workarounds" are big downgrades in functionality.