Whittl Media Ltd. T/A Hiri
You can install this software on a snap-powered system like Ubuntu.
Hiri is an email client for Office 365 / Exchange / outlook.com / msn.com / hotmail.com / live.com. Basically all the Microsoft Email services :-)
Hiri has full email, calendar and tasks functionality.
Hiri is a subscription service but you do have 7 days free to try it to see if you like it.
Visit www.hiri.com for more information.