I've been getting spam that has one thing in common: all the mails have a
reply-to field of the form:
replyto1@<domain> where the domain changes from email to email.
I'd like to set a search to filter these, but from looking around it appears that mail.app cannot filter based on the reply-to: field. Is that correct ? Is there any way around it ?
I'm running the latest update of Mavericks.