This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
The advanced configuration will allow me to specify an SMTP user name but there is no way to configure the IMAP user name being different from the email-address.
Using New Outlook on Windows for professional communication and productivity
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
You are right! I also can't understand why the new Outlook doesn't support IMAP - unbelievable!
But just using classic Outlook (Outlook 365) solves your problem.
But - only until April 2026, unless you have special licenses.
I was able to do this via the control panel "Mail" option. I was not able to configure this via just adding an account inside of Outlook.
To be very, very clear - you were able to add a custom IMAP login name for Outlook (New) via the control panel Mail option???
Previously - that has only worked for Outlook 365 (aka outlook old).
If this is true - what version of windows were you using? This still isn't possible with Outlook (new) and Windows 10 for me.
In other words - this menu (Outook 365):
Has no bearing on the settings referenced here: (Outlook for Windows):
Where the IMAP login is "jsmith" - not "******@mail.com". With Outlook for Windows (aka Outlook (new)), there still doesn't appear to be a way to use an IMAP login that isn't an email address.
I was able to do this via the control panel "Mail" option. I was not able to configure this via just adding an account inside of Outlook.
You are right! I also can't understand why the new Outlook doesn't support IMAP - unbelievable!
But just using classic Outlook (Outlook 365) solves your problem.
Just adding my shared frustration on this subject. This going to stop me from using Outlook as my IMAP email client completely, quite soon.
Plenty of other options exist of course (Thunderbird is my personal choice), but, it's the integration with family calendars, To-Do and other MS services which makes this such a pain. And for something so, so simple that it should have been in the very first release.
We really shouldn't need to be making a feature request for this. It's a very disappointing experience.