They all look and behave better than the old known Linux mail clients.
Linux really need applications more polished, that’s what they are bringing to the table.
I agree. The other day I reinstalled some old gaming pc of mine with the latest bazzite. Then I discovered it had lots of old photos on it, but in many many backup folders.
So I had Claude whip up a super fast image browser that had some features I really like from a Mac app I use. It looks better than 90% of Linux apps, is super fast and fits me like a glove.
Of course some of these mail apps will be abandoned, but they also provide an opportunity to make things more attractive on the Linux side and win some users.
You need a secure, supported mail client first and foremost. Better looks definitely would help Linux adaption, but safety and functionality takes precedence in this case