Comment on How IMAP works under the hoodparentComments−chasil1yPOP is a little simpler, but IMAP is designed for concurrent access by multiple clients to the same account.What this article doesn't address is OAUTH, which is required more often now.−kazinator1yThat's a hugely important use case, especially nowadays. People have mail clients running at the same time from multiple devices; e.g. desktop and mobile. Also multiple browser tabs with an instance of their webmail.
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POP is a little simpler, but IMAP is designed for concurrent access by multiple clients to the same account.
What this article doesn't address is OAUTH, which is required more often now.
That's a hugely important use case, especially nowadays. People have mail clients running at the same time from multiple devices; e.g. desktop and mobile. Also multiple browser tabs with an instance of their webmail.