Does Gmail provide a way to see a hash that they say represents the sum of all data within a given email?

1 Answer 1


Not exactly a hash, but every email has a unique ID. This value is accessible through the X-GM-MSGID email header.

 X-GM-MSGID: 1459153717434291429

This value, when converted to base-16, is 143ff493385c94e5, and with this we can directly link to said email: https://mail.google.com/mail/u/0/#inbox/143ff493385c94e5. (note: that link won't actually work unless you're logged in as me)

  • +1 Thanks, aware of the IDs, though as you know, it does not appear to be a hash; that said, it would likely be of if storing hashes.
    – blunders
    May 1, 2014 at 13:23
  • 1
    No Problem. They're not strictly hashes, but I've used them many times because all I really want is a guaranteed unique string, and they fit the bill. (and, technically, hash functions don't)
    – sente
    May 1, 2014 at 13:35

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