Thunderbird 3.0 and higher may display a new "reply list" button instead of "reply all", when the message appears to be part of a mailing list thread. "reply list" deletes all other To: and Cc: recipients, and it is the default action whenever it is present. There are at least two situations in which this behavior is undesirable: 1) When one or more thread participants in the To: or Cc: lists are
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