Email glossary · Practical guide
One-click unsubscribe: a specific email-header mechanism
One-click unsubscribe refers to a defined mechanism using email headers and an HTTPS POST action. A visible unsubscribe link alone does not establish that the mechanism is implemented.
Reviewed · Examples are illustrative
Who this helps: Readers checking a term before making an outreach or mailbox decision.
Meaning and common confusion
Review the delivered headers and endpoint behavior together. A preference page requiring more interaction is different from the automatic request used by a supporting mail client. The presence of header text does not prove the request reaches durable suppression.
Worked example
This is a synthetic illustration, not a customer result or a live configuration to copy.
Headers advertise a one-click endpoint
Supporting receiver issues the defined POST
Application applies the stop action
Separate check: the body link still gives the reader a usable route
A screenshot of a link is not a complete protocol test.Checks to make
- Inspect the actual delivered headers.
- Test the endpoint using controlled records.
- Verify the required signing and suppression behavior.
Next step and limits
Use the one-click header guide for the protocol checklist. RFC 8058 supplies the mechanism; provider rules determine when they require it. Do not make a GET request or an arbitrary crawler visit unsubscribe people unless that is the intended separate user flow.
Source references
Worked examples are illustrative. Editorial procedures are suggested methods, not measured performance claims or promises of additional product features.
Related guides
- One-click unsubscribe headers: test the request and suppression outcome →
- Unsubscribe link vs reply opt-out: operate both paths clearly →