Message-Id is actually optional in email (recently brought up when trying to mak... | Hacker News

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		seiji on Dec 6, 2008 \| parent \| context \| favorite \| on: Zed Shaw's Son of Sam Email Server: Write Email Ap... Message-Id is actually optional in email (recently brought up when trying to make a threaded email view: http://www.mail-archive.com/couchdb-user@incubator.apache.or... )

zandorg on Dec 7, 2008 [–]

Hi, thanks for pointing this out. I know that some web mail systems or Outlook mailboxes seem not to have the original ID, and one has to be generated in some random way (that breaks the links).

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