[reilly3000]

I'm soft-locked into Google Workspace/gSuite/Google Apps/??? with my primary account at a custom domain, and I really want out of my subscription but there isn't any way to convert that to a personal account. I have so many OAuth accounts, purchases, doc shares, etc associated with that Google account that it would be difficult to do without. Is there any way to keep that Google account without having an active subscription?

Also, I'm paying for Apple One and it could host my email... but should I? Its private relay system is pretty cool... but I really don't want to get locked in again.

I really want a self-hosted IMAP server, but to have decent spam filtering and deliverability. I'll set all the domain keys and stuff, but I need a trusted IP for the mail server or some path to make mine trusted.

[SwiftyBug]

I was in the exact situation as you are. I moved my custom domain to iCloud Mail. I'm not sure how complete the custom domain is with iCloud Mail. It basically uses the custom domain email to redirect to your @icloud.com email address. In email clients I have to login as [e-mail] and set my [e-mail] email as an alias. It works perfectly though, I'm very satisfied.

My Google account still exists at [e-mail], I can still OAuth with that account. My Gmail inbox is just not updated anymore since the emails are actually going to Apple's servers. I requested a Google Takeout (basically all the files and emails associated to your account" so if I ever lose access to that account, I don't lose the files.

[stranded22]

I migrated from Outlook’s custom email domain to Apple’s. It took a couple of changes with the DNS records and exporting the emails from Outlook.

In Apple, you can change the login details for your account to your custom domain.

Sounds like a project though - I also have a paid Bitwarden account which I use for my 2FA codes. Works well for me