Knowledgebase: Getting Started
What is the difference between the IMAP and POP protocols?
Posted by Pavel Karfik on 12 May 2015 14:10

You've probably heard that there are different ways an email program can retrieve your emails (called protocols). Two of the most common protocols are IMAP and POP3. But what are these?

POP3 means that emails are downloaded to a specific machine from the server. Once the emails are downloaded, the originals are deleted from the server. This means that if you're using POP3, the emails are tied to a specific computer and can't be viewed on other computers without forwarding them. IMAP, on the other hand, is not tied to a specific computer. Instead, you can log into any computer and view your emails because the emails are stored on a remote server and not on an individual computer. (A good example of this is Gmail.)

While you might think that IMAP would definitely be preferable to POP3, this isn't always the case. One of the biggest disadvantages to IMAP is that your inbox will have a size limit that can cause problems if you hit it. Fortunately, eM Client supports both IMAP and POP3 servers, so you can use whichever type you prefer.

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