I was looking for a suitable tag for a question about the email headers my email server creates but while looking I noticed that header-related tags could probably do with a clean-up:

I'm sure there shouldn't be header and headers as separate tags.
Two people follow headers, so maybe header should be merged into it, but should there be any generic headers tag at all, is it possible to be an expert on headers in general or is there something more appropriate?

Do we need host-headers and requestheader?