Gmail support

Onno Ekker o.e.ekker at
Fri Feb 21 17:55:58 UTC 2014

On 2/21/2014 6:43 PM, Andrew J. Buehler wrote:
> Other scenarios are possible as well, where there will be multiple
> similar-but-different copies of a given message, with the same
> Message-ID; such messages are distinct, and should be treated as such.
> Reliably distinguishing between them for deduplication purposes, without
> having to essentially cmp every new message against every existing
> message (which seems likely to kill performance), would be - at best - a
> considerable challenge. The obvious approach would be to use a hash of
> the message, but that leaves open the potential for collisions.

Another such scenario is when redirecting a message. A resent message
has the same message-ID as the original message and has an added unique
Resent-Message-ID. Unfortunately Google doesn't store the redirected
message, so you have no means to see to who you redirected it...


PS. Redirecting with Thunderbird is possible with the Mail Redirect

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