ABHIONLINUX
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2009/10/30

Pop and Imap difference

POP:
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1. Since email needs to be downloaded into desktop PC before being displayed, you may have the following problems for POP3 access:

* You need to download all email again when using another desktop PC to check your email.
* May get confused if you need to check email both in the office and at home.

The downloaded email may be deleted from the server depending on the setting of your email client.

2. All messages as well as their attachments will be downloaded into desktop PC during the 'check new email' process.
3. Mailboxes can only be created on desktop PC. There is only one mailbox (INBOX) exists on the server.
4. Filters can transfer incoming/outgoing messages only to local mailboxes.
5. Outgoing email is stored only locally on the desktop PC.
6. Messages are deleted on the desktop PC. Comparatively, it is inconvenient to clean up your mailbox on the server.
7. Messages may be reloaded onto desktop PC several times due to the corruption of system files.
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Imap:
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Since email is kept on server, it would gain the following benefits for IMAP access:

* No need to download all email when using other desktop PC to check your email.
* Easier to identify the unread email.
2. A whole message will be downloaded only when it is opened for display from its content.
3. Multiple mailboxes can be created on the desktop PC as well as on the server.
4. Filters can transfer incoming/outgoing messages to other mailboxes no matter where the mailboxes locate (on the server or the PC).
5. Outgoing email can be filtered to a mailbox on server for accessibility from other machine.
6. Messages can be deleted directly on the server to make it more convenient to clean up your mailbox on the server.
7. The occurrence of reloading messages from the server to PC is much less when compared to POP3.

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