Yes, it's has that problem... and I’m now looking for other reliable apps...

Yes, that’s a good idea, thank you.

Is there a standalone app for Android, or is it only available via the website in a browser?

Thank you very much for sharing the link. From the video, I understood that he was saying Proton has become a large company, which makes it vulnerable to attacks and scrutiny, and less likely to identify potential vulnerabilities. For that reason, one should not rely entirely on it for the various applications it releases. Yes, he’s right: a very small company specialising in a specific field is better than a large, diversified company.

Yes, thank you. But I didn’t mention them because they aren’t entirely free; they cost one euro a month, and I said email had to be either completely or partially free.