Closed Loop Confirmed Opt In is the full technical term for the best opt-in subscription practice around. But whether you call it Confirmed, Verified, Double or any other adjective it still means the same thing: “Hey you! Subscriber! Is this really you who signed up for this list? Unless you…

*** This is a Security Bloggers Network syndicated blog from The Spamhaus Project authored by The Spamhaus Team. Read the original post at: https://www.spamhaus.org/resource-hub/deliverability/confirmed-opt-in-a-rose-by-any-name