Asklemmy

I use my own domain with MythicBeasts for hosting, and Geary as a client on Manjaro GNOME, K9 Mail on Android.

Migadu. Yeah*. On the computer, I use mostly aerc (+notmuch), but hop on Thunderbird once in a while; on mobile I use K-9.

* If you are not looking for totally free options (though their cheapest plan is 20€/y and they give 50% discount to students), and if you don't care about email encryption (which you shouldn't). Migadu has a very good Pros/Cons page, I highly recommend you take a look, even if you're not using or planning to use their service.

Mailbox.org with my own custom domain ([email protected]) and Thunderbird for an email client.

I would highly recommend it. It is cheap and includes almost a complete replacement for Google services (email, contacts, calendar, online drive, etc).

Please consider your privacy. Giving all you emails to Google (or other mainstream data harvesters) basically gives them deep info about your whole life (purchases, travel, communication....everything).

Having a custom domain let's you go to any provider you like if you want to switch.

Gmail

Works fine. The only thing I wish they supported is shared mailboxes.

I use gmail and my own domain with uninbox. The latter is a quite new FOSS email front/backend, but its still very new and lacks essential features.

If I'd make the switch, it would probably be to tutanota.

Zoho, because it's email server is free to use for custom domain adresses

Posteo. Happy with them. For client, gnus in Emacs. Have it configured to do Autocrypt too, but almost nobody else on the planet does 🙁

Gmail, wouldn't recommend. Use it out of necessity.

I use k9 mail for checking on mobile and it is solid most of the time

Gmail and protonmail. Both give me no issues at all.

My own. With blackjack and hookers.

As a client I use Kmail. But I'm not really satisfied. Kmail 3 was so great, I miss it. I should go back to Thunderbird.

Gmail.

No.

Privateemail, no complaints

Tuta. It's great but no third-party client support.

I self host. Don't.

Have to use Gmail :/

gmx.com

It used to don't require phone number

I recommend it if you're not using for privacy sensitive use cases, has both IMAP and pop3 for free

Outlook. Yeah. It works.

I used to pay for Gmail, then I used Proton Mail about a year, and I’ve been using Fastmail for the last couple of years, which I recommend. I don’t know of anything that’s as feature-rich and easy to use as Fastmail. You may not be interested in all those fancy features, though.

I use MacOS/iOS Mail clients, but also Thunderbird as I’m trying to wean myself off of Apple’s ecosystem and onto Linux/FOSS.

Proton, yes, thunderbird

Protonmail, it's fantastic. Sleek design, solid feature set, integrates with Thunderbird if you want to use that.

Proton. Yes.