My email automatically gets separated into categories, including a spam folder, but I still delete about 80% of the mail that gets to me, without reading any of it. I need to go through my spam folder and delete all that shit. Where will it all go? Seems like it would end up somewhere, but I have no idea where.

is to do a search for certain stores or organizations that email you frequently. I just deleted about a thousand emails in a minute or two by searching for emails sent from a particular online store, hitting Select All, and deleting them 50 at a time until I was done. (The Select All only applied to the fifty emails that showed up on my screen at one time.) I also had to confirm for each batch of fifty that yes, I really did want to trash all those emails.

Other people with more expertise than me will probably jump in, but if they don't, I hope that helps.

That said, I just eliminated many thousands by grouping them by sender and dumping them.

Good one!

Review it for the very few that are worth saving. Move them to another folder.

Then I'm sure there is some sort of "select all" command to quickly delete
all the messages that are still in your inbox. No need to select each one
individually.

I have 80,000 unread emails.

The oldest is from 2018, so I guess they delete them after 80,000

I don't have time LOL