That's it. exists:List-Unsubscribe means does the email have a List-Unsubscribe header.
<facepalm> Thank you.
- FSL_BULK_SIG tweak? AJ Weber
- Re: FSL_BULK_SIG tweak? RW
- Re: FSL_BULK_SIG tweak? AJ Weber
- Re: FSL_BULK_SIG tweak? Matus UHLAR - fantomas
That's it. exists:List-Unsubscribe means does the email have a List-Unsubscribe header.
<facepalm> Thank you.