[mattnewport]

I know you're being facetious but email clients fail to satisfy me primarily when it comes to search and organization, remaining performant when dealing with large archives of mail, good UI/UX and robustness / reliability. None of these are really problems inherent to email, though they are perhaps inherent to software.

[joshschreuder]

I think the same problems appear in other domains with large libraries. Music players have also been historically terrible with bad UI, slow searching and many of the same issues you mentioned.

[scifi6546]

surprisingly I have found rhytmbox by the gnome devs to be pretty good. It does what is supposed to very well and it works which is all I want out of a digital music player.