User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7 Hello, One recurrent subject posted in lists is how to change list behavior to allow Thunderbird to works with lists. The mountain remain in the same place so Mahoma should move. According to the RFC 2369 (http://www.ietf.org/rfc/rfc2369.txt) list servers will send header that identify the list, here examples from Debian lists: X-Mailing-List: <debian-user-spanish@lists.debian.org> archive/latest/123444 X-Loop: debian-user-spanish@lists.debian.org List-Id: <debian-user-spanish.lists.debian.org> List-Post: <mailto:debian-user-spanish@lists.debian.org> List-Help: <mailto:debian-user-spanish-request@lists.debian.org?subject=help> List-Subscribe: <mailto:debian-user-spanish-request@lists.debian.org?subject=subscribe> List-Unsubscribe: <mailto:debian-user-spanish-request@lists.debian.org?subject=unsubscribe> The problem exists because Thunderbird does not recognize this kind of headers and all reply goes directly to senders. I believe and others too that Thunderbird should: a) reply to list or new reply-to-list button b) support digest mails and allow to reply individual mails c) allow html only d) assign "to:" according to the list. I suppose "X-Apparently-To:" should be. It is impossible to customize or replace headers using filters which may be an option until Thunderbird support Lists Later, Manuel Soto Reproducible: Always Steps to Reproduce: 1.reply to a list Actual Results: The message is composed using: account's mail and to message originator not to list Expected Results: Message composed w/: from: X-Apparently-To. Account email if missing to: list-post

see bug 223129, but only mentions unsubscribe/help functions reply-to-list is bug 45715, but doesn't rely on these headers (although they would make it easier to detect a list).

*** This bug has been marked as a duplicate of 45715 ***