Glossary · Metrics
Double opt-in— what it means in affiliate marketing
A lead that is only counted once the user confirms it, usually through an emailed or texted link.
It pays more than single opt-in and loses a predictable share of leads at the confirmation step. Where consent has to be provable, it is not an option but a requirement.
Related terms
| Term | Definition |
|---|---|
| Single opt-in | A lead counted as soon as the form is submitted, with no confirmation step. |
| Conversion rate | The share of visitors who complete the target action. |
Entry updated 15 September 2026. All 276 terms in one page.
