If you are normally a Linux user who has ever worked in an office that uses Office365 or Exchange, you will likely have heard of the Hiri email client. Hiri is one of the most robust Office 635 / Microsoft Exchange email clients on the market. Getting Hiri to run on ChromeOS via Project Crostini is pretty simple so lets get started.
Note : Hiri is a commercial application so you will need to purchase a subscription after the 7 day trial runs out. This has only been tested on amd64/x64 Chromebooks.
Step 1) Launch a Crostini Terminal and run the following
sudo apt-get install wget wget https://feedback.hiri.com/downloads/Hiri.tar.gz tar xzf Hiri.tar.gz cd hiri_220.127.116.11 ./hiri.sh
This should now launch the Hiri Setup Wizard, simply follow all on-screen instructions to setup your account. As a reminder, this will only work with Outlook.com/Office365.com/Exchange Accounts so please do not try to use your gmail account for this.
Once you complete the setup process, Hiri will begin fetching your emails, this may take some time if you have a very large inbox. Everything I tested works well, as expected.
Note : Sometimes Hiri launches in a minimized window, simply hit the Maximize button to full screen it.