Home Forums Networks & Cross-Platform Networking Mail App d/l hundreds of old emails

I am using my backup Mac while upgrading to Catalina on my new Mac. So, I decided to activate my email program on the older Mac to get emails temporarily. Now it's d/ling hundreds of older email and it's taking more than a few minutes to d/l each one. It's saying it's d/ling 563 emails of 565 emails. But it stays on that number 563 (it was 561) for several minutes. This could take all day. I don't want them to d/l, I just want them gone. Does this mean that Apple saves all of these? What the heck? How can I stop this except by turning off my mail program for now? I delete emails everyday. I don't save all of them. Thx.