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Question

Opinions on Kickbox, BriteVerify or TowerData? We have about 300K subscribers in our database. With each new batch of new subscribers, we see 5-10% of them using invalid emails. This level seems too high for comfort so we are looking to automate email verification / authentication for all new subscribers as they come in.

Email Marketing

Email Management

Email List Building

Answer

Lana Scolaro answered

Briteverify.com & Kickbox.io are definitely the two best IMO - cheapest, and lowest bounce rates (I've cleaned millions of emails with them).