I need to filter on the Subject and on the Reply-To header. It used to be possible in NN 4.7x but is no longer supported in Mozilla. Also, being able to add arbitrary headers to mail filters would be a Good Thing.
this is a dupe of the "filter on any header" bug assigned to bienvenu
*** This bug has been marked as a duplicate of 16902 ***
Status: UNCONFIRMED → RESOLVED
Last Resolved: 19 years ago
Resolution: --- → DUPLICATE
Marking verified as a duplicate.
Status: RESOLVED → VERIFIED
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