I’d never use a Microsoft mail client anyway. I use Thunderbird.
Thunderbird has a pretty ass UI though and it’s still pretty janky at times. I only switched to it over the mail app after email sent to our support department had some random persons name associated with the “contact”
Windows 10s mail app wasn’t bad, but now that it’s this new outlook thing I’d never go back.
It’s not hard to figure out, the UI/UX is just kinda ass. It’s got that open source made for developers by developers feel and not made for actual users feel.
The biggest thing I liked about the windows 10 mail client was how well it scaled to different sized displays, and all on the fly. Thunderbird I either make it look good for my 4k monitor, but unusable on my laptop if it’s a small window, or I make it look good on the laptop and it’s horrendous use of space. Without going into crazy themes the thunderbird client looks straight outa 2002 no matter what font sizes and layouts you tweak.