Hello.
Have you any plans about EWS (Eschange Web Services) support?
Office 365 accounts with F1 (prev K1) license does not support IMAP but support EWS.
I known that Office 365 has web interface) But it very very stupid and heavy!
Many of my workstations with 2 GB RAM cannot use it.
On Linux desktop I use Evolution and I'll be happy to have an adequate web interface for the O365.