TL;DR
- Pay-as-you-go ranges from about $1.70 to about $13.80 per 1,000 across five vendors, depending on vendor and pack size.
- Larger packs cost much less per email: every vendor's 1M pack is roughly 60-80% cheaper per email than its 5K pack.
- Built-in verification inside outreach tools is priced by credits and ranges from about $2 to $15 per 1,000 for Instantly, about $5.30 for Smartlead's entry pack, and about $50-70 for Clay-managed checks.
- Subscriptions, expiry and unknown-result rules change what you actually pay.
Cost per 1,000 at each pack size
| Pack | Mail Exchange | Emailable | NeverBounce | Kickbox | ZeroBounce |
|---|---|---|---|---|---|
| 5,000 | $5.80 | $7.60 | $8.00 | $8.00 | $13.80 |
| 10,000 | $4.90 | $6.00 | $5.00 | $7.00 | $12.90 |
| 100,000 | $3.00 | $4.20 | $4.00 | $5.00 | $6.49 |
| 1,000,000 | $1.70 | $2.10 | $2.50 | $3.00 | $3.20 |
Pay-as-you-go pack price divided by thousands of credits, from Emailable pricing page, NeverBounce pricing page, Kickbox pricing page and ZeroBounce pricing page, checked 2026-10-18. Kickbox 1M is $2,999, shown as $3.00.
Verification built into outreach tools
| Tool | Cost per 1,000 verifications | Catch |
|---|---|---|
| Instantly (Growth plan) | about $7.80 | 0.25 credit per lead; monthly credits expire after 2 months |
| Instantly ($97 plan) | about $4.90 | Same expiry rule |
| Smartlead add-on (entry pack) | about $5.30 | $32 for 6,000; runs at CSV import only |
| Clay-managed validation | about $50-70 | Roughly $0.05-0.07 per check in Clay credits; your own validator key avoids this on paid plans |
Figures recorded from each tool's published pricing and help pages on 2026-10-17; they change often, so confirm before buying.
What changes the real cost
- Unknown results. If a vendor charges for unknowns, your cost per usable result is higher. Emailable, Kickbox and ZeroBounce don't charge for unknowns; Mail Exchange refunds them.
- Duplicates. Lists often contain 2-10% duplicates; make sure you aren't billed for them.
- Expiry. A cheap pack is expensive if half of it lapses. NeverBounce pay-as-you-go credits expire after 12 months.
- Subscriptions. Monthly plans can be much cheaper per email at steady volume. See pricing models explained.
Quick estimates
- A 20,000-address prospect list: $99 at Mail Exchange (25,000 pack), or about $258 at ZeroBounce's 10K rate ($0.0129 each).
- An agency verifying 100,000 a month: $300 (Mail Exchange pack) to $650 (ZeroBounce pack).
- A newsletter of 50,000: about $179 at Mail Exchange.
Use the cost calculator for your exact volume.
FAQ
How much does it cost to verify 1,000 emails?
Between about $1.70 and $13.80 depending on vendor and pack size, on pay-as-you-go (checked 2026-10-18). Larger packs are much cheaper per email.
What is the cheapest email verification among established vendors?
At every size we checked, Mail Exchange is the lowest priced of the five big names; NeverBounce's monthly subscription can be cheaper at high monthly volume.
Is email verification worth the cost?
Usually, yes: a few dollars per thousand protects sender reputation. See the ROI guide.
Related
- Every price compared
- Cost calculator
- Is verification worth it?
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