What are POP3 and IMAP4?
POP3 and IMAP4 are e-mail protocols that let you collect your messages from another e-mail account remotely. Your messages are collected in a mailbox on a server, and when you want to check your mail, the messages are downloaded to your own computer or wireless phone. Many Internet service providers (ISPs) have POP3/IMAP4 servers so that you can check your e-mail from anywhere in the world. Contact your ISP to see if your e-mail account can be accessed via your phone. For example, if you have a Sympatico or Yahoo! e-mail account, you’ll be able to access it wirelessly using My Inbox.
They let you remotely collect your messages from another e-mail account. Your messages are collected in a mailbox on the server and when you want to check your mail, it is downloaded to your own computer or wireless phone. Many ISPs have POP3/IMAP4 servers so you can check your mail from anywhere in the world.