Double Opt-In
A subscription flow where a new contact must confirm via a follow-up email before they are added to your list, creating a logged record of consent.
Why it matters
It is the cleanest way to prove consent under EU rules, and it keeps your list to people who genuinely chose in, which protects deliverability.
What good looks like
A compliant setup sends a confirmation request, only activates the contact after they click, and stores the timestamp and source of that confirmation.
In the European market
Single opt-in may pass in some markets, but for DACH the documented consent from double opt-in is the safe default. Treat it as the norm, not an upgrade.
Related terms
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