Do you know whether your e-mail client uses POP (Post Office Protocol) or IMAP (Internet Message Access Protocol)? You should, because IMAP is vastly superior to POP, and you should consider the following reasons that you should switch today:
- Avoid webmail outages :: Users who connected to their web-based email accounts (such as Gmail) using IMAP can continue to retrieve their mail as usual even if the web-based email platform goes down.
- Switch clients or platforms painlessly :: You can move effortless from one program to another without having to export / import messages and risk losing messages or the metadata attached to them.
- Read all your mail on multiple devices :: For people who must use a variety of devices or operating systems, IMAP lets you see exactly the same data – including saved, filed, and sent messages – on every device.
- Keep an extra copy of your messages :: The fact that IMAP gives you both local and server-based copies of each message can help you avoid data loss.
Source: "Four reasons to switch to IMAP" by Joe Kissell, published at Macworld.com.