True - Gmail just offered a better service all round for the same cost (free!)
Is yahoo still going? I’ve lost count of the number of new owners it’s had 
The closest with POP is to set your client to delete after a number of weeks or days, this gives you the opportunity to download to all devices, tho obviously it doesn’t track read status or sync sent mail etc. The benefit of POP of course is that all your emails are on your device, not up on someone’s servers.
Personally I only email from my Mac, if I need to compose an email on my phone or iPad I will do so in Notes, then send when I am back on my computer. Most people use their phone for everything tho - many do not even own a home computer 