Habrapish: Delete all messages?

I do not even know where to start. Perhaps I'll start with the fact that I love everything to be "on the shelves." So that in the inbox of the mail client it was empty, etc.

When I wanted to delete all messages from “Habrapmail” - I searched, searched, but did not find the opportunity with one click, select all messages for later deletion. Why not make such a button?

But my blog about making money on the Internet