13.1.6 x-face

If you have installed one of the following, you can decode `X-Face:' field in message buffer and you will see face image.

If there is an encoded X-Face string in a file `~/.xface' (the value of the variable wl-x-face-file), it is inserted as a `X-Face:' field in the draft buffer (if wl-auto-insert-x-face is non-nil).