Biintiim

Don’t know where to start. It’s just full of bugs: sound stopping while video is playing, sounds being played from videos what you haven’t start playing, vote buttons not working, sign-in errors (“wrong password error” while password is correct), etc. It’s literally the worst official app by any website app I have ever used.

Compared to other email clients it’s pretty good. It's upgraded pretty often, but still full of bugs. One bug gets fixed, other one gets created. Reliability is it's biggest flaw. MS should start fixing bugs not creating so much features. It's OK, if you use it for personal emails. But it headache if you use for business, as you cannot relay on it. It's not ok, that users have to do beta testing.