Last time I used thunderbird was many years ago, like 10 years or so. Can you create a mail adress there? How does it compare to other providers like Tuta, Proton, Posteo and others?

Doesn't Matrix have a huge problem with metadata or am I not up to date with this?

I'm using Tuta and their app for a few years now. The app was slow indeed but it's good now, no problems so far. Lack of IMAP support is justified with security, they say. I personaly don't need IMAP as I'm completely satisfied with the app, which is available officially in f-droid btw.

What about SimpleX Chat? Comes without identifiers, is open source and not located in the US. Relay Servers are located in Germany, UK and Sweden and it's possible to host your own. Last audit was in 2024. No metadata is stored. Fundings are handled very transparently and presentated on the Website.

Not meaning to advertise it, just genuine interested in other peoples opinion.

Wird immer mehr Zeit für einen regelmäßigen Fahrtauglichkeitstest ab einem gewissen Alter.

Agree with that. I would like to support them and the cables look fantastic, but the price is too much tbh.