38 lines
1.9 KiB
Plaintext
38 lines
1.9 KiB
Plaintext
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MBOX-Line: From nicolson at google.com Fri Jul 17 10:01:12 2015
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To: imap-protocol@u.washington.edu
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From: Jamie Nicolson <nicolson@google.com>
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Date: Fri Jun 8 12:34:55 2018
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Subject: [Imap-protocol] Duplicate mail detection criteria
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In-Reply-To: <CAG9Tr9UebJayiaU-_eN4oX9-hWdzNw8NqYP6ViukrvSYEi_mKg@mail.gmail.com>
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References: <CAG9Tr9UebJayiaU-_eN4oX9-hWdzNw8NqYP6ViukrvSYEi_mKg@mail.gmail.com>
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Message-ID: <CACU8CfQA15Un2YYsrDCOmHAeGiDhkBXZVcHco4jUCX63bW-ENQ@mail.gmail.com>
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We had to add a hack to allow attachment stripping by IMAP clients, since
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our default duplicate detector would always discard the stripped version as
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a duplicate. For IMAP appends, we consider the messages different (not
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duplicates) if the MIME structure changes or any MIME part's size increases
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or decreases by more than 50%. The 50% number is somewhat arbitrary but was
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inserted to allow for conversion between CRLF and LF line endings. This
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might not be necessary anymore, due to some internal implementation
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changes, so we could investigate making it more strict.
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On Fri, Jul 17, 2015 at 5:03 AM, yuganya <yuganyaa@gmail.com> wrote:
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> Am using imap in thunderbird. When i delete large attachment, gmail
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> detects it and syncing it with web. When i delete a small attachment (500
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> bytes) , It not syncing with web.
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> On analysing further, When deleting large attachment there is a drastic
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> change in size and gmail accepts it as new message. but while deleting a
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> small attachment,gmail detects it as duplicate and ignores it.
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>
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> so what is the criteria gmail using for duplicate detection.
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>
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> _______________________________________________
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> Imap-protocol mailing list
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> Imap-protocol@u.washington.edu
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> http://mailman13.u.washington.edu/mailman/listinfo/imap-protocol
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>
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