ZeroBounce Cleans Lists. Veriastra Prevents Problems.
ZeroBounce focuses on post-send list cleaning. Veriastra validates in real time at signup so bad data never enters your system.
Real-time validation
Validate at the form and API in ~120ms instead of uploading files after the fact.
Multi-layer accuracy
SMTP, DNS, and heuristic checks with fraud detection beyond a single deliverability score.
Prevention > cleanup
Block disposable and risky signups before they cost you, not after.
Where ZeroBounce is the better buy
Every product has a job it is built for. These are the jobs where ZeroBounce is the answer and we are not, said plainly so you can tell in two minutes whether the rest of this page applies to you.
If your problem is the spam folder, not the address
They will send a seed message through your setup and report which providers filed it in the inbox. That is a different measurement from address validity and we do not offer it.
If the addresses are fine and the sends are landing badly, that is their product — though our email verdict does return the domain's SPF, DMARC and DKIM posture, which is usually where the answer turns out to be.
If you want to be paged when you get listed
Their premium tier re-checks your sending IPs and domains against public blocklists every eight hours and alerts on a listing — a monitoring product, and we do not sell one.
We return blocklist status the moment you ask about a domain, on the same credit as everything else in the answer.
If you validate a handful of addresses a month
100 credits every month, indefinitely, email only. Ours is 200 credits a month across every product, no card. Above roughly a hundred addresses a month, their paid tier starts at $0.0099 each against our $0.0032.