It is annoying to always get the half-page header when printing an email. Should be an option.
Did you mean to file this under Thunderbird or something? It's up to the mail client how to print the headers. The product needs to be changed or it's INVALID.
Changing product to Core > MailNews: Printing after the reporter e-mailed me and said this was an issue with the Suite's mail client. This is a dupe of bug 181527, but I'll leave it up to the reporter to change this.