I get a mail from someone, I want to make a filter of it. Open the filters dialog, new filter or add to existing filter, and it opens with "From" and the current sender. However, I want both to and from this person to be filed, so I change From to "Any Field". Now the address is gone! I kind of understand this, but it is really irritating.
Related: I haven't figured out how to copy the email address from an existing mail, for instance to stick it in a filter. It seems I can only copy the full contents of the From line. -- Victor Eijkhout http://www.eijkhout.net/