3 ms·

There are unsubscribe headers that are used by mail user agents like mutt to unsubscribe from mailing list managers like mailman. These are "scanner-proof" so

There are unsubscribe headers that are used by mail user agents like mutt to unsubscribe from mailing list managers like mailman. These are "scanner-proof" so far but support in clients like Outlook or Gmail is non-existent.

chuckadams 6mo ago
Gmail not only understands the List-Unsubscribe header, it requires it for bulk deliverability.