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ListSweep
Verify a million emails for $79, not $3,199
ListSweep checks an email list before you send it: syntax, MX, live SMTP, catch-all, disposable, role and spam-trap detection, with a 0-100 score per address. $79 covers a million verifications a month. A free Windows app runs the same engine offline.
Hi Product Hunt,
I built ListSweep because email verification pricing stopped making sense to me. Verifying a million addresses costs $3,199 at ZeroBounce and $79 here, and the underlying work is the same ten checks: syntax, typo detection, disposable domains, role accounts, MX, a live SMTP handshake, catch-all detection, spam traps.
Two things I'd rather be upfront about than have you find out later.
First, our benchmark page publishes no accuracy number. Every verifier claims "99%+" and almost none say how they measured it. We have the methodology and the corpus published, but not a run we'd stand behind yet — so the page says so instead of inventing a figure.
Second, we found a real bug in our own engine last week and it's worth knowing what it was. Our SMTP probe introduced itself with a domain that doesn't resolve on the public internet, so Cisco and other strict receivers rejected it before the address was ever checked — and we reported that as "could not connect". Real, valid addresses came back as unknown. It's fixed, and the engine now tells you when a failure is ours rather than your list's, because those need completely different responses from you.
There's also SweepWin, a free Windows app that runs the same engine entirely offline, for lists you can't upload to a third party at all. No account, no upload, no charge.
Happy to answer anything, including the parts that don't work yet.
About ListSweep on Product Hunt
“Verify a million emails for $79, not $3,199”
ListSweep was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #50 on the daily leaderboard. ListSweep checks an email list before you send it: syntax, MX, live SMTP, catch-all, disposable, role and spam-trap detection, with a 0-100 score per address. $79 covers a million verifications a month. A free Windows app runs the same engine offline.
On the analytics side, ListSweep competes within Email Marketing, Developer Tools and Marketing automation — topics that collectively have 556.7k followers on Product Hunt. The dashboard above tracks how ListSweep performed against the three products that launched closest to it on the same day.
Who hunted ListSweep?
ListSweep was hunted by richscripts. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of ListSweep including community comment highlights and product details, visit the product overview.
richscripts