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They do, on a per-session basis - but it's an optional feature (that's supported by ~100% of all imap server implementations).
by c0l0 4y ago
They do, on a per-session basis - but it's an optional feature (that's supported by ~100% of all imap server implementations).
- KRAKRISMOTT 4y agoWhat's the name of this extension?
- epilys 4y agoIt's actually in the original IMAP4rev1 RFC: https://www.rfc-editor.org/rfc/rfc3501#section-2.3.1.1 https://www.rfc-editor.org/rfc/rfc3501#section-2.3.1.1 Using UIDs is opt-in, by prefixing `UID ` in front of some commands. There are indeed extensions that add more `UID ` commands to the protocol. I've implemented IMAP clients and never used sequence numbers at all.
- vidarh 4y agoUID was present already in RFC 1730 (IMAPv4): https://www.rfc-editor.org/rfc/rfc1730#section-6.4.9 https://www.rfc-editor.org/rfc/rfc1730#section-6.4.9