I do use Outlook and it works pretty well, but: - No proper conversation view on desktop. - Filters (e.g unread) get disabled on every view change (including

I do use Outlook and it works pretty well, but: - No proper conversation view on desktop. - Filters (e.g unread) get disabled on every view change (including switching between mail and calendar) - The mobile client has no setting to stop it from marking messages as read upon changing focus to another message. - The message editor isn't really WYSIWYG. I often insert paragraph breaks that are gone in the sent message. - It's generally buggy, like everything Microsoft makes lately.