A few of my colleagues using Mail, and myself, are unwillingly and without any knowledge of this misbehaviour, sending messages encoded with a charset of windows-1252:
Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable [...] Mime-Version: 1.0 (Mac OS X Mail 7.2 \(1874\)) X-Mailer: Apple Mail (2.1874)
I see the same problem coming from many different versions of Mail. This is a serious problem since for some anti-spam and anti-virus filters, messages encoded with this historical coding are identified as coming from SPAM sources or viruses.
Of course, I found an easy way to choose the format used to encode one message. But this function doesn't scale for people dealing with tenths or hundreds of messages.
How is it possible to avoid sending messages with this historical and malware symptomatic format? How is it possible to definetly and easily choose the format used for all sent messages?