Android

Although my main one is gmail, I have been using proton mail for a while and I'm getting to point where I trust it for most stuff and I will start to move non-critical stuff away from gmail.

For Gmail users on Mac desktop, I really can’t recommend Minestream enough, if a paid app isn’t a dealbreaker. It’s designed by ex-Applers and implements gmail’s API completely— even to the point of the signature editor and vacation auto responder and having a mode that only shows unread messages and starred messages in your inbox (which is kind of a badass way to stay on top of busy mailboxes).

Thunderbird on the desktop, Aquamail on Android, RoundCube/SquirrelMail via the web in a pinch. Back in the day I also used Evolution on Linux (when T-bird was buggy and lacking some features). Despite having many email buckets in the cloud, I keep no mail in any of them. I've self-hosted since '99, so I've been able to do whatever.

I did use Outlook back in sepia times (pre-'98) and used Pegasus and/or Pine before that. :p

Either k9 or the native email client (Samsung Email, LG Email, ...) when they have a good Systemwide integration.

Patiently waiting for Thunderbird on mobile with k-9 so Gmail it is atm

On Android I use Re:Work, like interface the best. Before that I have used previous app from the same developer (I think it was Nine mail?).

On Windows I really disliked Thunderbird, so currently testing out emClient.

• On my desktop: GNOME Evolution - but only because my university uses Outlook w/ Exchange (cringe) and the UI is slightly more tolerable than Thunderbird.
• On my phone: I just use the baked-in Samsung Mail app.

In terms of provider, I used to use Gmail for my personal, but got tired of Big G scraping my correspondence. I tried Proton, but its integration story is a complete joke (you can upload your calendar and contacts but there's no DAV support, their IMAP bridge is a non-standard-compliant dumpster fire that doesn't work with half the clients I tried...) so I ended up on Fastmail.

Protonmail connected to my domain

Literally just started using k9 mail on my phone and it is amazing. It just does all of the setup for you.

i'm just using tutanota since they don't work with 3rd party clients

Web portals. I use web portals.

I use Tutanota's clients, and enjoy it. Haven't had any issues, was a great replacement to the unencrypted privacy-invasive Gmail and Google Calendar, sorting to folders has been even more convenient

Been using K-9 Mail because they support OpenPGP. Also, their user interface is miles better than FairEmail's.

It's paid (one off $15 I think), but has a two week trial but I've been using Nine for a few years now, pretty happy with it.

gmail emails

Protonmail is the way

K9 Mail on my phone, neomutt on the desktop.

Big fan of outlook tbh, it works well and both on iPad and android

Just remember what the Magic 8-ball says when you drink the water inside it… "Outlook is not good!"

Really, though, I know the 'me' of about 20 years ago would be shocked to hear this, but the whole Microsoft suite with Outlook is pretty comfortable to run and use. I use it when hosting websites for my business, and it's always worked how I needed it.

Beyond that, I used Thunderbird for years and that's my go-to client when I want to go free. It's easy to set up and people usually love using a Mozilla product.

I've migrated from just using a gmail account to using Anonaddy which point towards a Tutanota email. The migration was PAINFUL, but glad I persisted and went through with it.

Been using mutt for years, and I still love it. But getting it to works is more and more of a pain nowadays, and I find myself using whatever webmail my company uses (right now O365). For personnal emails, mutt on the desktop, and a selfhosted roundcube for when I don't have a client.

Careful if you're using Outlook on Android. From what I've read, it doesn't actually locally handle non-exchange accounts like IMAP or POP3 (why are you using POP3 though). It's done on Microsoft's servers, so your basically giving Microsoft your e-mails. I'm not sure what kind of access they get to them from the privacy agreement you probably just clicked past.

So Outlook in Android users Microsoft servers to fetch your mail, and the client just shows whatever the server got.

Gmail. Never put much thought about it tbh

Web based only here. I have multiple address though so the "client" varies. Outlook, gmail, Proton.

Protonmail + Duckduckgo's email service, which links to a preexistent email (proton in my case) and allows you to clear trackers from emails and to use randomly generated email adresses.

Edit: only now realized that you asked for client, welp, I use proton's client, but I've been considering using thunderbird lately

Thunderbird on desktop, fairemail on android.

on desktop I use eM Client. On Android I was using just plain GMail but I saw people in this comment section using other stuff so I checked it out and swapped to FairEmail.

edit: FairEmail is fantastic and I've upgraded to pro. Definitely recommend this one for mobile users with multiple email accounts.

Used to use Thunderbird but I wanted something that just looked like it was from this century. I like how eM Client works and its features and it looks nice. I don't like that I am limited to 2 email accounts though. I'd love something like it that is FOSS and allows more email addresses.

I use Em Client on desktop and I love it, on android the Em Client app is still in beta and quite unstable so for now I'm using outlook. Looking at the comments I should give K9 a go.

Edit: Switched to FairEmail for Android

I use K-9 on mobile and Vivaldi on desktop.

Spark on both Android and Win. The AI integration is surprisingly useful, albeit I think a paid feature. I also personally like the look of the clients and they are pretty fully featured.