[kmail2] [Bug 417206] KMail wrong date in IMAP APPEND command

Erik Quaeghebeur bugzilla_noreply at kde.org
Tue Sep 8 15:11:17 BST 2020


--- Comment #10 from Erik Quaeghebeur <kde at equaeghe.nospammail.net> ---
(In reply to kernel_panic from comment #8)
> For example, GMail uses the timestamp provided in the APPEND command to
> store, index, and display messages in its web interface. This timestamp may
> be different to the one provided in the message header. However, it appears
> that this timestamp is stored separately (presumably in some indexing
> database) since the original message's Date header is left intact and
> showing the correct timestamp. […]

I think there is a misunderstanding. The INTERNAl DATE is *not* the same as the
Date header value and it should not be according to the RFC. (Usually, it will
be close, but can differ significantly[*] if message delivery is delayed.)
Please read https://tools.ietf.org/html/rfc3501#section-2.3.3 for a

GMail does follow the RFC here AFAICT and uses the ‘REFS’ threading option. (As
does, e.g., Fastmail.)

[*] So that order of mails in a thread differs based on INTERNAL DATE or Date

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