Anyone here using IMAP instead of POP for Gmail and Mail synching? Been having problems sending out emails, especially those with attachments (even small ones < 500kb). I'm on Sun Broadband Wireless, using a Gmail account on Mail. I couldn't understand what the problem was so after much tinkering and researching, I found out that we can use IMAP instead of POP for free. I made the switch and everything seems to be working just as it used to be. But what's the difference between IMAP and POP? I found some information on gmailblog, but what else can you share about it in simpler, more practical, everyday terms? Does this mean I have to redo fixing my folders? Or will it use my existing structure and apply this to gmail on the web? Is IMAP really better than POP? Is there anything else I need to know?