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Confirmed opt-in (double opt-in)

It is off unless you turn it on in Settings → Your business → Confirmed opt-in. It needs a verified sending domain (or our shared domain) first.

• A new person from one of your forms gets one email with a button. Until they press it, they are Waiting to confirm: they get no campaign or automation and do not count towards your plan.
• The page after the form says "Check your inbox", with a button to Gmail, Outlook, Yahoo, iCloud or Proton when the address is there.
• Through the API, only people sent with lawful basis consent (sign-ups) are asked. Customer records with soft_opt_in or business are not.
• The link works for 30 days. A second sign-up an hour or more later sends it again.

Turn it on if bots fill your forms with addresses that did not ask.