EMAIL VERIFICATION COST / CREDIT BUDGET
Count the actions.
Keep the units.
Enter billable actions and their credit weights, then apply usable quota before buying top-up packs. Track unused balances and expiry across your billing periods.
The starting example is fictitious. It is not a quote for Hunter, Apollo or another vendor. No address is checked here. A “valid” status does not establish permission to contact someone or predict delivery.
Updated · Local result and full CSV without an account.
Buy the shortfall.
Track what remains.
Calculate to see the budget.
- Credits needed across periods
- Top-up cash (USD)
- Top-up packs to buy
- Unused credits at end
- Of those, purchased credits
| Period | Needed | Net allocation | Prior balance expired | Available | Guaranteed minimum | Shortfall | Packs | Cash USD | Closing | Rule note |
|---|
Actions and their weighted units
Closing balances and first unusable period
A count is not
always a credit.
How are units calculated?
Billable actions equal aggregate attempts minus repeated attempts only when you declare repetitions free. An uncharged status contributes zero. Billable actions × the declared weight gives required credits. Search, verification and enrichment can share a calculation only if the provider uses the same compatible credit pool; otherwise calculate them separately.
How are packs purchased?
At each period start, old balances expire and the net new allocation is added. Required credits use the earliest known expiry first, with included credits first on ties. A shortfall buys the smallest whole number of equal-size packs needed to cover it. New packs are available immediately and charged in that period. Unknown-expiry balances are last in the declared consumption order; their later availability remains unknown. A guaranteed minimum from known allocations can still prove that no purchase is needed. When all possible uncertain balances have expired under declared lifetimes, later periods can become calculable again.
What is the expiry convention?
A lifetime of two periods includes the allocation or purchase period and the next one. Credits bought in period 1 are first unusable in period 3. Rules marked unknown can leave later cash and balances unknown. Past consumption outside this model must be subtracted in the allocation inputs. No opening carry balance, shared multi-pool account, quantity discount or base subscription fee is inferred.
What do the fictitious examples show?
5,400 charged actions × 1 credit require 5,400 credits. After 1,000 included, the 4,400 shortfall needs three packs of 2,000 at $15: $45 cash and 1,600 purchased credits left. At 0.5 credit/action, with packs of 1,000 at $15, 2,700 needed minus 1,000 included leads to two packs: $30 and 300 left.
What does zero mean?
Zero actions buy zero packs. A blank weight, quota, price or relevant billing rule is unknown, not free. Unknown prices withhold cash only when a purchase is needed. Size zero is refused. No supplier wins a comparison because its price is missing.
What does this tool verify?
Arithmetic and your declared rules only. It does not check an address, identify a person, send email or assess permission or deliverability. Vendor contracts, quotas and status rules must be checked against a current official source before using a real budget.
Rules reference, checked October 20, 2026: ZeroBounce pricing and credit FAQ and Email Hippo pricing. These are examples of official sources to consult; no vendor price, quota or status rule has been imported into this calculator.
Your inputs stay
in this calculation.
Use aggregate counts and public quote sources, without addresses or API keys. No calculation input is submitted, stored in the URL or saved in browser storage. The preview server receives ordinary page and asset requests. Download a CSV to keep your scenario; copying uses the clipboard only when you choose it. A hosted release requires verified publisher details and its own privacy notice.