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[Imap-protocol] Duplicate mail detection criteria

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From: yuganya <yuganyaa@gmail.com>
To: imap-protocol@u.washington.edu
Date: Fri, 08 Jun 2018 12:34:55 -0000
Message-ID: CAG9Tr9UebJayiaU-_eN4oX9-hWdzNw8NqYP6ViukrvSYEi_mKg@mail.gmail.com permalink / raw / eml / mbox 
Am using imap in thunderbird. When i delete large attachment, gmail detects
it and syncing it with web. When i delete a small attachment (500 bytes) ,
It not syncing with web.
On analysing further, When deleting large attachment there is a drastic
change in size and gmail accepts it as new message. but while deleting a
small attachment,gmail detects it as duplicate and ignores it.

so what is the criteria gmail using for duplicate detection.
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E-mail headers
From: nicolson@google.com
To: imap-protocol@localhost
Date: Fri, 08 Jun 2018 12:34:55 -0000
Message-ID: CACU8CfQA15Un2YYsrDCOmHAeGiDhkBXZVcHco4jUCX63bW-ENQ@mail.gmail.com permalink / raw / eml / mbox 
We had to add a hack to allow attachment stripping by IMAP clients, since
our default duplicate detector would always discard the stripped version as
a duplicate. For IMAP appends, we consider the messages different (not
duplicates) if the MIME structure changes or any MIME part's size increases
or decreases by more than 50%. The 50% number is somewhat arbitrary but was
inserted to allow for conversion between CRLF and LF line endings. This
might not be necessary anymore, due to some internal implementation
changes, so we could investigate making it more strict.

On Fri, Jul 17, 2015 at 5:03 AM, yuganya <yuganyaa@gmail.com> wrote:

> Am using imap in thunderbird. When i delete large attachment, gmail
> detects it and syncing it with web. When i delete a small attachment (500
> bytes) , It not syncing with web.
> On analysing further, When deleting large attachment there is a drastic
> change in size and gmail accepts it as new message. but while deleting a
> small attachment,gmail detects it as duplicate and ignores it.
>
> so what is the criteria gmail using for duplicate detection.
>
> _______________________________________________
> Imap-protocol mailing list
> Imap-protocol@u.washington.edu
> http://mailman13.u.washington.edu/mailman/listinfo/imap-protocol
>
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