As a general thumb rule . . . it is a recommended practice among Users, to set all e-mail accounts according to the IMAP protocol, (instead of POP3) in MailWasher
- If you mainly work your email from one computer, POP3 is the way to go. If you frequently work your email from multiple computers or devices AND need to access that email from multiple devices, IMAP is the way to go.
The primary difference between POP3 and IMAP (from the users "
viewing" aspect) is when the user deletes the email in MWP with POP3, it deletes the email from the email servers. It can no longer be viewed with that computer or any other device - EXCEPT that is not really true - in most cases. What most email providers REALLY do with POP3 when an email is deleted is they "
temporarily" move the deleted email out of the Inbox and in to the Trash/Recycle Bin folder. After the Temporary period has expired (30 days is typical) then it is actually purged from the server. This is important to remember.
When the user deletes the email in MWP with an IMAP account, the email remains on the server and can, therefore, be viewed by other devices (work computer, or cell phones, as examples).
I find IMAP is genuinely a PITA. So all my accounts (gmail and non-gmail) use POP3 in both in MWP and Outlook 2016 (for my "keepers"). That way, they deleted emails don't keep showing up.
"IF" I am away from my primary computer, I can still see all my emails from any other device, as long as I have NOT deleted it with MWP .
If I have already deleted it, because most providers temporarily move that email and don't immediately delete it, I can simply visit the Trash bin on the specific email host and read it, or even recover it and put it back in the applicable Inbox.
One potentially big disadvantage to IMAP is security/privacy. With IMAP, your emails are stored on the servers essentially
forever. With POP3 they are deleted (usually after 30 days - or immediately if you manually empty the Trash). Of course, if your system is otherwise compromised, it does not matter what email protocols you are using.
Another "possible" disadvantage to IMAP is, for some people, space. If using a big, major provider like gmail, it is usually no big deal. But if using a small email provider from some of the smaller ISPs or website hosting services, many set limits to how much space you are allocated for emails. Text emails are small. But some attachments can be HUGE!
Should I use imap or pop3?