Hello helpme931,
Welcome to Apple Support Communities. Since you already have custom domains for your email, you can set them up in the iCloud Mail. Per the Apple Support article: Set up a custom email domain with iCloud Mail on iPhone
Add a custom email domain to iCloud Mail
You can add a custom email domain you already own to iCloud. If you already have email addresses at that domain, you can configure them during setup. If you don’t, you can create email addresses after you add the domain to iCloud.
Note: You need to have a primary iCloud Mail address before you can add a custom email domain on iPhone. See Create a primary email address for iCloud Mail in the iCloud User Guide.
- Go to Settings
> [your name] > iCloud > iCloud Mail, then make sure iCloud Mail is turned on. - Tap Custom Email Domain.
- Follow the onscreen instructions, or tap Add Domain.
- Follow the onscreen instructions to finish setting up your domain.
- After you set up your domain, follow the onscreen instructions to log in to the registrar you purchased the domain from, then tap Connect to verify your domain. This usually takes a few minutes, but could take up to 24 hours.
- Some registrars require you to change DNS records to set up your domain. See the Apple Support article Set up an existing domain with iCloud Mail.
Feel free to reach back out if you have any questions.
Have a great day!
