ConceptPost Office Protocol 3
POP3
An earlier email retrieval protocol that typically downloads messages to the local device and deletes them from the server, and does not support multi-device synchronization of folder structures.
Timeline (last 90 days)
Sep 30
Email is built on open protocols such as SMTP, IMAP, and POP3, which do not belong to any single company.
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Sep 7
The POP3 protocol appeared in 1988.
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