ZapBounce vs AtData
AtData's SafeToSend blends SMTP checks with activity and toxicity signals from AtData's email data network, priced per email with a sales route at volume. ZapBounce runs its own SMTP check and publishes every price from $5 for 1,000 to $949 for a million. You're choosing between a data-network score and a published per-list price.
| ZapBounce | AtData | |
|---|---|---|
| Accuracy reporting | Coverage stated: the share of your list with a definite verdict | Markets a deliverability guarantee; no accuracy method on its product page |
| 1,000 addresses | $5 | See their pricing page |
| 10,000 addresses | $25 | See their pricing page |
| 100,000 addresses | $139 | See their pricing page |
| Free tier | 100 a month, no card | See their pricing page |
| Credit expiry | Never | See their pricing page |
| Billed for unknowns | No | Not stated |
AtData prices change, so confirm theirs on their own pricing page. Ours are fixed and published on /pricing.
How AtData prices it
AtData publishes SafeToSend as pay-as-you-go per-email tiers that fall as volume rises, with larger volumes quoted by sales (read September 2026). ZapBounce publishes every tier through a million: $5 for 1,000, $139 for 100,000 and $949 for 1,000,000. Unknowns and duplicates never cost a credit.
Why teams pick ZapBounce over AtData
What changes when your list runs through ZapBounce instead.
The short version
- A flat table from $5 for 1,000 to $949 for a million, published in full with no sales call above any tier.
- Uploaded addresses are never sold, never added to a shared database and never reused to improve the product.
- Unknown results and duplicate rows are never charged, and the pricing page says so.
- Credits never expire, and 100 free credits arrive every month with no card.
- Our own SMTP check on port 25, closed before DATA, so no message reaches the addresses you check.
Moving off AtData
AtData prices SafeToSend per email on a sliding table, and the top volumes go through a sales conversation. Its checks lean on signals from AtData's own email data network. If you want a flat, public price at every volume and a list that stays yours alone, ZapBounce prints its whole table and never adds your addresses to any shared database.
Export your list from InstantData, or start from the original file, and upload the CSV to ZapBounce. Rows come back with your columns plus result, reason and a billed flag. If a form calls SafeToSend in real time, point that request at POST /v1/verify and map the four results.
The hard addresses, and how they come back
Questions people ask about AtData
How does AtData price SafeToSend?
AtData lists SafeToSend as pay-as-you-go tiers priced per email, falling with volume, and quotes larger volumes through sales (read September 2026). ZapBounce publishes every tier through a million, from $5 for 1,000, with no quote step.
Does ZapBounce add my list to a data network?
No. ZapBounce never sells uploaded addresses, never adds them to a shared database and never reuses a list to improve the product. Uploads are kept for 30 days by default, and you can delete a batch at any time.
Can I test ZapBounce against an AtData result?
Yes. Every account gets 100 free credits a month with no card. Run a sample you've already checked in SafeToSend and compare how many rows reached a clear verdict on each side.
Is ZapBounce cheaper than AtData?
Ours is $5 for 1,000 and $139 for 100,000, published, with no minimum. Credits never expire, and unknowns and duplicates are never billed, so the rate you see is the rate you pay.
Can I test both before deciding?
Yes, and you should. Run the same sample of a few thousand addresses through each and compare how many came back unresolved. That difference matters more than either accuracy claim.
Put your last SafeToSend invoice beside ZapBounce's published tier for the same volume, then run 100 addresses free before you decide.
Run the same sample through us and AtData
100 free checks a month, no card, and the unknowns come back labeled.