iCloud plus custom domain

Hi there Gazzaman1976,

Thanks for taking the time to connect with us here in Apple Support Communities! We understand you're not receiving emails using your custom email domain for iCloud Mail. We're glad you're here, and we can provide some guidance.

To begin, you'll want to be sure you followed the steps in this link to add a custom email domain:

Add a custom email domain for iCloud Mail on iCloud.com

Next, you'll want to work through the suggested steps in this support article:

If iCloud Mail isn't working

We hope this information is helpful. Don’t hesitate to let us know if you have any more questions.

Cheers.

It took a few tries to get this setup. I used one of my domain and email to try this in iCloud+.

1. It sends and receives to itself find using the Mac Mail app and the iCloud web app
2. I can send to and receive from exchange and gmail email accounts
3. I can NOT receive any emails from an IMAP email account, either from the email client (Mac Mail), or web app. Tried now to 2 days with no success.

Have you tried receiving from an exchange or gmail email, or those are not working either?