IAM Identity Center (IAM IC) user setup "Send email verification link" email is not being received

If someone at AWS wants to dive into this problem they can get in touch with me. hopefully they can save me as a customer.

E-Mails not being delivered can have various root causes. I would recommend to step-by-step debug the issue end-to-end, to verify where the issue is located:

• Check if the e-mail has ended up in a spam folder
• Send an e-mail to the target address from outside your domain --> ensure that the address is working properly
• Check the logs of your mail server (if you have access to them) --> do you see delivery attempts? Are they blocked, gray-listed, or delivered?
• If you don't see any attempts on your mail server, cut a ticket with AWS support, potentially the above step must be executed also on the sending mail server

Debugging e-mail can be cumbersome, but such a step-by-step (or hop-to-hop) approach is typically the most efficient solution to this type of issue!

• Check if the e-mail has ended up in a spam folder

Goes without saying, 100% nothing in spam or in quarantine,

• Send an e-mail to the target address from outside your domain --> ensure that the address is working properly.

This too is also goes without saying... tried from my other domains no problem, and as advised I received the email from AWS when I did the password reset it arrived no problem from no-reply@signin.aws.

• Check the logs of your mail server (if you have access to them) --> do you see delivery attempts? Are they blocked, gray-listed, or delivered?

added both AWS addresses and domains to the whitelist, and there is not a single rejection in my reports.

• If you don't see any attempts on your mail server, cut a ticket with AWS support, potentially the above step must be executed also on the sending mail server

Yes I think this is what is needed!

I do not see how I escalate this with AWS, hoping some AWS person reads it or someone point me in the right direction.

This is just super weird and super annoying that one email address in my domain won't send from AWS. firstname.lastname@mydomain.com works just fine the alias firstname@mydomain.com does not work.

even after I deleted the user and recreated it. still no good. the email itself receives email just fine

the other alias firstname+server@mydomain.com also works just fine. could it be that this one above (firstname+server) is preventing the newer one firstname@mydomain.com

Hello!
The problem you are currently having may not be a technical AWS problem, but may correspond to an issue related to your AWS account.
In such cases, it is possible to open a case with AWS Support under "Account and billing".
The "Account and billing" inquiry is available to free users, so it is worth checking!
https://docs.aws.amazon.com/awssupport/latest/user/case-management.html