That's interesting, though I had a feeling that there must be an intermediate system involved - some of the features that are offered aren't available on/from the base services. However, if you hand your email passwords to any third party app you are already trusting that they won't misuse them - the price of convenience. (But as said above, I wouldn't trust anything with .ru) Email is not secure anyway unless you go full neurotic; it worries me how often I still get new account notification emails with the username and password given in clear text (I always go in and change the password when that happens).
I've been using it a few years now I think. It's been fine in operation, my spam levels don't seem to have varied noticeably and I don't think I've been hacked or had my id stolen.
