Definition
An email header that lets recipients unsubscribe directly from the inbox in one click. Providers increasingly require it for bulk senders.
Glossary
List-Unsubscribe
An email header that lets recipients unsubscribe directly from the inbox in one click. Providers increasingly require it for bulk senders.
Related terms
- Spam complaint rateThe percentage of recipients who mark your email as spam. Providers cap this very low, often around 0.1 to 0.3 percent, and exceeding it harms deliverability quickly.
- Suppression listA list of addresses you must never email again, such as hard bounces, complainers and unsubscribes. Honouring it protects reputation and compliance.
- CAN-SPAMA US law setting rules for commercial email, including a valid sender address, a clear unsubscribe and no deceptive subject lines.
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