It doesn't seem popular (here at HN, like Fastmail) but the bang for the buck from NameCheap "private email"[0] is pretty solid. I started using them years ago as an alternative to GoDaddy for domain names, and more recently for hosting my email. At little as $1.24/month for a 5GB mailbox with custom domain names / catch-all.
They use something called Jellyfish for spam detection and it's been pretty impressive. A few false negatives but overall catches most of it. And you can use their webmail or any IMAP/POP3/SMTP client.
Have you moved a largish email archive from Gmail to Namecheap? I see they tell you to do it with your client but that seems like it might be unreliable when you have gigabytes of mail to move.
I'm moving some email now using Thunderbird. It's slow and I don't have huge amounts (Gmail tells me 1.39GB). I'm sure it's possible but it might take an hour or so.
A bit slow but I don't think it's unreliable. If it is, that's scary because how would I know :)
Just moved a folder with 1037 emails and it has 1037 on NameCheap now. Seems like it moved them all! (And it didn't take too long. It's moving a bunch of subfolders now.)
They use something called Jellyfish for spam detection and it's been pretty impressive. A few false negatives but overall catches most of it. And you can use their webmail or any IMAP/POP3/SMTP client.
[0] https://www.namecheap.com/hosting/email/