Mail Monitor - Can't filter by Envelope-to field

I'm getting spam now where the only header field that I could reliably filter it on is the Envelope-to field. But this field isn't in the Header Field combo box.

Could it be added in the next release please Yuri?

If you can't to find some header field you can just write need text there.
MM uses the string from the text part of the combobox.

Doh, thanks Yuri.