[Darkjedi]

I personally prefer IMAP as I like my email synced between all my sources including my phone, MS Outlook and online Gmail. I almost never delete emails unless its really useless, but instead archive them in a seperate folder. When I move my mail into the "Archive" folder, it gets deleted on my phone once it sends and receives to Gmail servers. On the website/Outlook however it's still retained in my Archive. This lets me save space on my phone, but also keeps a history of my old e-mail correspondences.

POP3 is really antiquated at this point. With services like Gmail and even Hotmail you have gigabytes of server storage so you almost never have to worry about mail space.