I use Gnus v5.13 I read https://www.gnus.org/manual/gnus_124.html#Face and set in .gnus.el
(setq message-required-headers (nconc message-required-headers (list '(Face . (lambda () (gnus-face-from-file "~/face.jpg")))))) But I couldn't generate and insert Face header at writing a mail. I think there is no problem about ~/face.jpg (48x48 pixels, 13.2kB). When I pasted Face header generated by shell script with face.jpg http://quimby.gnus.org/circus/face/make-face (I needed to rewrite "mimencode" to "mmencode" of FreeBSD package) and send a mail myself, I could see Face image correctly. Does anyone know the solutions? -- Satoshi Yoshida