I used outlook for years and I really liked it operationally and feature-wise as a mail client.
My problem was the corruption I'd get of the .pst file or whatever file it was that the mail on your local box was stored in.
I mean every single day, even weekends, I got anywhere from 6 to 60 emails a day.
I had tons of rules and Mail Folders created, so that various emails from certain people, depts or reports would go into their specified folder. For me it was easier to digest and manage that way. YMMV..
About every three years, my mail folder would get corrupted and I loose a ton of important crap.
Our IT sucked because of the restrictive rules and policies they had everything locked down with..
There was a point, I could not even change my IP address.
Imagine being on call and being dispatched out to a Police Station, Hospital or some other business at 2am to work on an outage, the customer is there watching your every move in anticipation of their voice, video and Data being back online.
The router or switch is hard down.
You can't console into it, cause you no longer have an actual usable Serial port and you aren't allowed to install a USB to Serial Dongle, or worse change your laptops IP to one of a Subnet that can talk to the deaded router, to see WTFs up and how quick you can restore it. OR get into a NIB Unit, to put a base config on to replace the failed unit.