u/AmanoTC

Edit: I made the move and switched over to BetterBird. Thank you for the suggestion, removedI

As the title says, I am looking to replace Outlook.

The Tuta client and the Proton client don't support other E-Mail providers. EM Client as a free version only supports two E-Mail accounts (and the paid version is overpriced for my use case). Thunderbird still is linked to Mozilla and sends data to the US.

I am just looking for a (free) Desktop E-Mail Client to log into my three different E-Mail accounts via IMAP and/or POP3 and which collects as minimal data as possible, is GDPR compliant and keeps the data within the EU.

What would you recommend?
Thank you for your answer.