POP3 and IMAP

From SuperbHosting.net Support Wiki

There are two different protocols available to access e-mail: POP3 and IMAP.

• POP3 - POP3 (Post Office Protocol 3) is a protocol used for downloading email messages from an email server to your computer. With a POP3 email account, all of the email messages sent to your email address are stored on a POP3 mail server until you log on to the server and download the messages to you local computer.
  
  Superb Hosting provides POP3 email accounts with every hosting plan. You can use our Webmail application to check your mail or you can use a traditional email client such as Microsoft® Outlook®, Eudora® or Netscape® Communicator. POP3 is useful when e-mail is checked from only one computer. Use of a POP3 e-mail client in association with Webmail can cause errors in your Inbox that will result in a temporary loss of access to your mail.

• IMAP - IMAP is the better choice if you want to check your e-mail from multiple computers, at work and at home, for example. IMAP has the added benefit of accessing folders on the server, allowing you to organize your e-mail and access it from anywhere. Superb's Webmail uses IMAP. If you use Webmail, you should use IMAP on all of your e-mail clients.