I would like to send plain text emails using Apple Mail. (I'm using version 3.6 on Leopard.) This looked fairly straightforward: Preferences -> Composing -> Message Format: Plain Text. However, Apple Mail sends messages using this MIME type:
Content-Type: text/plain; charset=ISO-8859-1; format=flowed; delsp=yes
Most email clients will display very wide lines using this format, and I'd rather keep my lines within 75 columns or something like that.
In essence, I would like Apple Mail to send messages using this MIME type:
Content-Type: text/plain; charset=ISO-8859-1