POP-Based POP web based e-mail is for those customers who wish to check e-mail on the road, but wish to manage the mail with a POP based client like Outlook when they return home. You will not be able to send large attachments or use HTML to compose your e-mails using POP-based web mail. IMAP-Based IMAP based is for those who wish to do all their e-mail management from the web. IMAP based web mail is just like Hotmail or Yahoo!Mail. It includes folder management the help organize your mail and allows you to send HTML based e-mail and attach documents. You can also create personal settings. All folders and mail will be stored on your web space under that user checking mail.