Agent WranglersEML-35Recommended
Label list mail
Give each mailing list a List-Id header, so people and mail apps can filter and manage it.
How to do it
Use a stable name for each list, such as List-Id: Product news <product-news.example.com>, as RFC 2919 describes. Keep it the same for every send. Send it with the headers in Offer one-click unsubscribe.
How to check
Two newsletters from the same list carry the same List-Id.
Sources
Related rules
- EML-27 Offer one-click unsubscribe in Email
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