Eh? I'm rather confuzzled now.
Your earlier post hadn't mentioned anything about "...I combine it with Tor", so I don't know what that's about.
In your second post, the "Top 10 " link refers to Yandex as "...Yandex.Mail could
function as a full we-based IMAP client" - that is, if it was upgraded. That's what i meant about mobile-only - the site you linked to earlier seemed to indicate that actually Yandex.Mail wasn't a pukka web-based IMAP client.
I only posted my comment to suggest politely that you might have posted your comment in a thread where it was not relevant.
I'm sure Yandex is very good (Why wouldn't it be?), but - and I could be wrong, of course - it doesn't seem to be trying to portray itself as providing a secure encrypted email service such as ProtonMail - does it?