Recently I finished my switch from memorized and re-used passwords to KeePassXC and KeePassDX based on recommendation of other Lemmy users, and I like the workflow.

In a similar fashion, I also recently purchased a domain name, and set-up paid e-mail account(s) at Purelymail with that domain.
I use Thunderbird on desktop and phone for now.

It’s OK-ish on desktop, but the phone experience is poor.
On desktop, during set-up it requires filling fields such as “Full name” to continue, which can even be deleted later. Thankfully, there is some advanced option to skip guided setup after this.

On a phone, the name field is equally mandatory, only to then be flagged as “Optional” in settings after setup.
It also requires BOTH IMAP and SMTP. Not only that, it verifies that the SMTP server is valid and the user can be authenticated (I didn’t try without IMAP).
Trying to load that account via export from desktop shows an “invalid data” error.
Furhtemore, I can’t receive e-mail notifications.
I have them enabled, I allowed necessary permissions, there is a permanent notification stating it works, RethinkDNS shows active connection to the IMAP server, when I open the app, the e-mail is immediately there.