Traffic & geos

DOI (Double Opt-In)

Lead-gen offer paying on confirmed email click.

DOI (double opt-in) requires the user to click a confirmation link in a follow-up email before the conversion fires. Lower CVR than SOI but higher payouts and cleaner downstream metrics. Required by many email regulators (GDPR, CASL).

Example

DE DOI insurance offer at €4.20 payout, but only 38% of SOI submissions click the confirmation. Effective CR vs LP-form is 2.1× lower than SOI but payout is 3× higher.

Related terms

SOI (Single Opt-In)
Lead-gen offer paying on email submission.
CPA
Cost per acquisition — ad spend divided by conversions.
CPL
Cost per lead — what you pay per generated lead.
GDPR
EU regulation on personal-data processing — applies globally to EU users.