Hi, I've become interested in notmuch. After looking at the documentation of the Python bindings, I have the following questions: * Is it correct that a message's Message-ID used as its unique key in the notmuch database? * If yes, is it correct that two messages with the same Message-ID, but with different contents/other headers, will have only one entry in the database? * If yes, for resent messages (https://tools.ietf.org/html/rfc2822#section-3.6.6), does notmuch use (the chronologically last) Resent-Message-ID, or the Message-ID? Best, Erik