Re:Message threading (1997-2002)
by songgao on Sunday September 08, 2013 @09:15PM
(#6351323)
Thanks! That's an interesting read. We were actually wondering what was the maximum number of items in References field but couldn't find any. This RFC does give an answer[1]!
[1] http://tools.ietf.org/html/rfc5322#page-25
EDIT: fixed typo