- It hangs all the time for a few seconds at a time,
- The search is moronic (how about you look on the server and on my computer at the same time instead of hanging for a while and then displaying that dumbass message offering the option to search on my computer instead when there's a problem with the connection?),
- Switching to the unread message view regularly results in a progress doofer that never disappears until you switch to a different view and switch back
- The message list font size gets corrupted by moving between Windows of different DPIs forcing you to switch to a different folder then switch back again to make everything readable
- It asks you whether you want to save changes just because you've clicked a link in a calendar appointment
- Got thousands of emails? It's slow, slow, SLOW, SLOW(!!!), SLOOOOOOOOOOW!!!!!
- Too many modal dialogs
- It's clunky as hell when juggling calendar appointments, booking rooms, etc.
- When opening a meeting series it asks me whether I want to open the whole series or a single meeting every single time. Can I just have a modifier key for this, please, so that I can open whichever way I choose without being prompted?
- Inconsistent and unpredictable behaviour when it comes to inserting images as attachments versus inline in an email
- Losing messages in conversation view
- Difficult to follow conversations/find all messages if you don't use conversation view(!)
- Inconsistent behaviour around contact auto-completion: sometimes people end up in the auto-complete list, sometimes they don't
I could go on. I won't.