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The original was posted on /r/selfhosted by /u/DGReddAuthor on 2025-07-08 09:24:05+00:00.

I’m well-versed in SPF, DMARC, etc. But at the end of the day, I can’t do anything about OVH getting IP ranges blocked.

So, I figure I’ll throw all my email at either Google or Microsoft. I’m convinced they’re the only two players and block out any competitors by ensuring it’s virtually impossible to stay deliverable to their IPs if you’re not Google or Microsoft.

Or maybe it takes more effort than I’m willing to put in.

Can anyone point me at the process for migrating to either of these, and maybe a suggestion on which is better (if one stands out)?

I will only use them for email. I’ll host my DNS records and point them to MS/Google etc. Previously I used imap2imap to migrate historical email, is it possible to use that?