About VerifyFlow
We built the email verification tool we wanted to use ourselves: pay once, check your list, get on with your campaign.
Why we built this
Most email verification tools are built for agencies running lists every week, priced as monthly subscriptions, gated behind accounts and credit systems, sized for people who verify constantly. If you just need to check one list before one campaign, that is a lot of commitment for a five-minute job.
VerifyFlow is built for the other case: you have a list, you have not mailed it in a while, and you want to know who is still real before you hit send. One file, one flat price, no account to manage afterward.
What we believe
Pricing should match the job
A one-time task deserves a one-time price. £20 covers a list of any size, once, with no recurring charge for a tool you might use twice a year.
Your list is yours
We keep your file and results only as long as it takes for you to download them, tied to your access code. We do not sell, share, or reuse it. See our Privacy Policy for the details.
Big lists shouldn't be a special case
Whether your list is 500 rows or 500,000, it runs through the same pipeline at the same flat price, with no per-row pricing that punishes you for having a real audience.
Part of the Klairvo family
VerifyFlow is built by Klairvo, alongside SecondLook, Appeal Hero, and Klairvo Markets, products built around the same idea, leveraging data to deliver insights.