Exchange does NOT work properly

Do not go ahead with it if you use Exchange, it didn’t work. It works for 5 min than stops and sometimes it didn’t work at all. It was a trully disapointing and big lost of time trying and trying. I’ve went to the Airmail support then I realize other users have faced the same problem as me. Very frustrating, I’ve felt fooled.
The good news is that I was able to update Outlook 2011 and it get back in action with El Capitan.

Barbazull about Airmail - Lightning Fast Email, v2.5