On 02/28/2013 03:47 AM, Gisle Vanem wrote: > I saw you uses Thunderbird on Windows. I'm not sure how it by default handles > a reply-to when there is no "Reply-to" field in the header. To the address in > "From" / "Sender" or what? Thunderbird has a handy, "reply to list" button that works every time no matter what the rely-to field is set to.