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But the exact behavior is determined by the design of the client and settings chosen by each user.

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Whenever an IMAP client connects to the server, it can synchronize changes bidirectionally - for example, new messages in the Inbox download to the client changes made in the client while it was offline upload to the server, updating the master records. The best way to think about IMAP is that the server holds the master copy of every message. I’ve been using IMAP, I’ve maintained local copies of every single message in my accounts, and have never had trouble reading, searching, filing, or otherwise managing my messages when offline. The simplified “IMAP-means-stored-on-the-server” explanation has led countless people to assume that you can use IMAP only when you have an active Internet connection. With POP, you can leave messages on the server if you want to, and with IMAP, you can download all your messages and store them locally.

That’s sort of true-ish, but it’s unfairly misleading in both cases. (I’ll return later to whether that’s a good idea.) But IMAP has been a viable option for decades.Īre You Being Served? - The usual way people explain the difference between POP and IMAP is to say that with POP, all messages are downloaded from the server to your email client, whereas with IMAP, messages are stored on the server. So, many of us who have been using the Internet for a long time became accustomed to POP - and a surprising number of people still use POP, often out of habit more than necessity. Now, it’s true that in the early days, email clients and servers alike were more likely to support POP than IMAP (and even today, IMAP support isn’t universal).

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(For perspective, Apple’s Macintosh System Software 5 - the first one to include MultiFinder - was released in 1988.) Both protocols subsequently underwent numerous revisions, but in any case, it’s a bit silly to consider POP “traditional” and IMAP “new.” Yes, POP has been around quite a while - it was invented in 1984. New Kid on the Block - The first thing I want to clear up is the persistent notion that IMAP is some sort of newfangled email system, a regular Johnny-come-lately compared to the ancient and revered POP method. Mac, and iTools have always defaulted to IMAP for email access. You may very well have been using it for years without even knowing it - iCloud and its predecessors MobileMe. Almost every modern email client - including Apple Mail, Thunderbird, Microsoft Outlook, and dozens of others - supports IMAP as a means of retrieving email. That puts it in the company of POP (Post Office Protocol) and Microsoft’s MAPI (Message Application Programming Interface). Although many Web sites claim that the acronym once stood for Internet Mail Access Protocol, I have found no credible references to back up that claim.īy whatever name, IMAP has always been a means by which email clients can talk to email servers. Versions 2, 3, and 2bis were referred to as Interactive Mail Access Protocol, and version 4 - what’s in use today - is officially Internet Message Access Protocol. IMAP’s inventor, Mark Crispin (who, sadly, died in December 2012), called the first version of his creation Interim Mail Access Protocol. IMAP stands for… well, thereby hangs the first tale. In today’s installment of FlippedBITS, I want to examine a handful of common misconceptions about IMAP, a familiar protocol for retrieving email from a server.

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#1623: How to turn off YouTube's PiP, use AirPlay to Mac, and securely erase Mac drives.Right now you can download the newest version from our website, and existing users will be automatically updated in the near Continue reading. Thunderbird 78 is our newest ESR (extended-support release), which comes out yearly and is considered the latest stable release.

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Portable Thunderbird OS X is the popular Mozilla Thunderbird email client packaged so you can carry it around with you on any portable device, USB thumb drive, iPod, portable hard drive, memory card, other portable device (also on your internal hard disk) as long as it has 55 MB of free space and use on any Mac OS X computer, taking your email, address book and account settings with you.

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