First: the software is unable to automatically set up my university account. If it can be of any help, my email is something like user@correo.ugr.es. But the worst thing is that i'm not given an option to manually set up my accout. However, I can set it up as a classic email box in Messages.
Second: When I look at the sent mails I'm looking for all the mails I've sent, not just those from the phone.
Third: Also I've configured it to discard mails older than 1 month, but it keeps showing only a few days.
Forth: (I just thought of it) When I collapse a few days in the inbox, go somewhere else in the app, and come back to the inbox, the collapsed folders get expanded...
In a side note, this is not a bug but more like a wish, now that you can scroll the list of mails without the scrollbar, why not simply remove it?
That's it, keep working on this great app.