Not really. It doesn't support OAuth, which is kind of silly (well, actually very silly).

I switched to FairEmail, which has too many options but supports OAuth.

The OAuth support won me over to FairEmail (https://email.faircode.eu/) as well. Was a long time K9 user over several Android releases, but I guess I'm getting impatient in my old age. This last time had no end of trouble getting things to work and finally gave FairEmail a try. OAuth support for all my accounts won me over immediately. Now if Thunderbird would only make the same effort for the desktop...

Thunderbird has supported Oauth2 since v38 - used it myself on several occasions for migrating gmail accounts in work context, works fine.

I made the exact same move for the same reasons a few weeks ago. The UI is a little... dense, but plenty featureful and made working with required oauth for my school Outlook email pretty easy.

I use K9 mail with app specific passwords. Works just as well. Takes afew extra minutes to set up compared to OAuth

If you use a company account, you might not be able to have app specific passwords. OAuth is your only option then.

Is OAuth2 on their roadmap?

I think K9 was kind of in maintenance mode until recently. It's been nice to see more updates though.

"but supports OAuth" should be qualified. Neither FairMail nor Thunderbird support custom oauth configurations. Both only come with preconfigured oauth setups for a small number of providers including gmail and outlook. It might actually be just these two. Perhaps one of them supports gmx or yahoo as well. That's it.

If you have your own SMTP/IMAP with oauth support you cannot use either tool to log into it. The only actual software that I know which supports custom oauth configuration is Roundcube webmail. It also happens to work beautifully with postfix + xoauth.

By the way, the last time I was searching for an email client with oauth support I got the distinct impression that oauth was on its way out anyway.

Why do you need OAuth? I still use k9mail v5.6 and Gmail still works for me.

For me it was freezing frequently when downloading emails, and became unusable over time. FairEmail was a bit better, but the UI is awful unfortunately. In the end I've ended up with the Google Mail app - not my first choice but it works well with multiple accounts and is easy to use.

To me Google Inbox was the best incarnation of an email client ever (both the mobile and web app). They have quite inexplicably pulled the plug on it though.

To me it was clear on the day when they pulled the plug and dumped everyone back into regular gmail: this was a product that was worked so well, that you no longer saw things that you were not going to interact with and were not wasting your time in this attention economy. And that was a “bees against honey” situation and it not allowed to continue.

People who created Inbox they should be proud of themselves!

People tell me most of Inbox's features have been integrated into Gmail now. But it just isn't the same..

I use BlueMail myself. I would normally take the open source option, but K9 didn't work with so many servers. In desperation I went back to GMail, but it didn't handle rfc822 attachments. Then Microsoft Outlook, but it just didn't work period on many occasions. I tried a whole pile of others in rapid succession, which is how I came across BlueMail.

It works with every service, handles the broadest range of attachments, is perfectly reliable, has no ads and has the best UI of any of them. I don't know why it exists, but I'm glad it does.

Still, it not being open source hurts. I wish Thunderbird worked on Android.

Is there an iOS port? Or comparable iOS app? (Not the official Mail app please)

Ive been looking for a while as well, and most iOS email apps are basically cloud apps where the app dev's servers log into your email for you, which I dont like.

Im currently testing Canary, which doesnt seem to do that and so far its ok. But I K9 and Fairemail are definitely one of few apps Im missing since migrating to iOS.

I’m using p=p on iOS - I saw it flagged as a K9 equivalent somewhere so tried it, and so far it’s good and table for me - let’s me see a lot of mails without the “external content” which at times , mostly, is just great

I’m not sure but I’m using Outlook on iOS and it’s been better than the regular mail app in my opinion. No idea about security and privacy though, after all I’m introducing another developer into my mails which can’t be too good I guess.

Outlook goes through Microsoft servers

Here is an interesting option: p=p email

https://www.pep.security/en/

Aqua mail