Internal Use
Security
POP vs. IMAP
Am I using POP or IMAP?
If you are not sure if you are using POP or IMAP, check the properties or settings in your email program.
- In Eudora, this is usually under Tools and Options (or Special, Settings on a Macintosh). Under 'Incoming Mail' either IMAP or POP will be selected.
- In Outlook 2000 and previous versions, try under 'Tools', 'Accounts', select the Case account, and then select properties.
In Outlook XP/2003, try 'Tools', 'E-mail Accounts', 'View or change existing accounts', 'Next', select the Case account, and 'Change'. - If you are using the mail.case.edu webpage to check email, you are using IMAP!
What's the difference between POP and IMAP?
When setting up most email programs, you will be given an option to choose the type of email you are checking, POP or IMAP. Both are used on our campus.
| The old method, Post Office Protocol | The new method, Internet Messaging Access Protocol |
| Best if you use only one computer to check email | Best if you use many different computers to check your email |
| Downloads your email to the particular computer you are checking it on | Your mail is always on the server |
| Allows you to keep a large backlog of email messages only limited by the size of your computer. | You are limited by your mailbox size quota for how many messages you keep, although you can archive old messages and save them onto your computer manually. |
| Does not have a web interface (Some webmail companies, such as Yahoo, will let you check POP mail) | Has a web interface. If you are using mail.case.edu, you are using IMAP! |
| New messages are downloaded in their entirety, you have to wait for the message to download. | New message headers are downloaded so you see all your mail faster, the message you want to read is not downloaded to your computer until you click on it. |
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