Hiri for Windows - free download

Fast, good looking email client. Lighter than MS Outlook with some unique and clever features.



Basics:

- Fully integrated calendar

- Tasks

- Contacts

- Built for Exchange, Office 365 and Outlook.com

- Uses Microsoft's own protocol - EWS. So if you need to go back to Outlook, everything will be synced.



Nice features:

- Great task list built in. You can just drag an email to the right-hand side to make a to-do item out of it.

- Super fast search

- Triage emails using the Action/FYI filters.



- Deal with emails using the 4 D's - Defer, Delete, Delegate and Do.

- Send emails with actions

- Dashboard and timer to remind you not to check email too often (this is a really bad habit!)

- Nice touch - the subject line is at the bottom of the compose window. You'll write a better subject line AFTER you've written your email. Get your emails noticed.