Glossary · Metrics
Single opt-in— what it means in affiliate marketing
A lead counted as soon as the form is submitted, with no confirmation step.
Higher volume, lower payout, and the model where lead quality arguments are loudest. Advertisers answer with validation and clawbacks rather than with confirmation emails.
Related terms
| Term | Definition |
|---|---|
| Double opt-in | A lead that is only counted once the user confirms it, usually through an emailed or texted link. |
| Conversion rate | The share of visitors who complete the target action. |
Entry updated 29 July 2026. All 276 terms in one page.
