Deleting Emails on TP2 to Tell Mail Server to Delete That Email?

[Recursion]

Hey folks, I'm trying to figure out how to get my TP2 to act the way my TP1 did.

So, here's my old set-up:

Touch Pro (Sprint) would download email from my pop server (verizon.net) and was set up to leave a copy on server. If I deleted an email that my TP downloaded, and then later did a send/receive, it would somehow tell my mail server to delete that email even though "leave a copy on server" was selected. I knew this was happening because when I dumped emails onto my desktop (not set to leave a copy on server), the emails I had deleted on my TP would not download.

So, how in the heck was this happening? Did I have some other configuration than above?

Does anyone know if & how to replicate this set-up on the TP2?

Btw: My TP1 was a stock Sprint Rom; my Sprint TP2 is MightyRom's.