Double opt-in
Double opt-in asks new subscribers to confirm by clicking a link in an email before joining your list, trading a little friction for higher list quality.
Double opt-in adds a confirmation step to signups. Someone enters their address, receives an email, and clicks to confirm they really want to subscribe.
It produces smaller, healthier lists. Fake and mistyped addresses never make it in, which protects deliverability and keeps engagement metrics honest.
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