Compare email verification APIs
Every figure below comes from the vendor's own public pricing and documentation pages , checked on 2026-09-03. Where a page does not state a value, the table says "not published" rather than guessing. Corrections are welcome at [email protected].
| service | pricing model | free tier | price per 1,000 at ~10k | unknowns billed |
|---|---|---|---|---|
| Spaw vs Abstract API | Monthly subscription tiers with a request slider from 5,000 to 150,000 requests a month; Starter from $17, Standard from $37, Professional from $39 a month | 100 requests a month | not published | Yes |
| Spaw vs Bouncer | Pay-as-you-go credits that never expire (minimum 1,000 credits for $8), auto-refill, plus a Deliverability Kit subscription at $25 to $250 a month | 100 free credits, no card required | $6.00 (10,000 credits for $60) | No |
| Spaw vs Emailable | Pay-as-you-go credits that never expire, or a monthly subscription at a 15% discount; minimum purchase 5,000 credits | 250 free credits at signup | $7.60 (pay-as-you-go at $0.0076 a credit; a 10K monthly subscription costs $32.30) | No |
| Spaw vs Hunter | Monthly or yearly subscriptions with unified credits shared across search, verification and enrichment; credit packs on paid plans (valid 3 months) | Free plan with 50 credits a month; one verification costs 0.5 credit, so 100 verifications | $7.45 (Growth: $149 a month for 10,000 credits, 20,000 verifications at 0.5 credit each; $5.20 billed yearly) | No |
| Spaw vs Kickbox | not published | not published | not published | not published |
| Spaw vs Mailboxlayer | Monthly or yearly subscription with a request quota per plan and per-request overage | 100 requests a month | $3.00 (Basic: 5,000 requests for $14.99 a month, overage $0.012 a request; Professional Plus: 50,000 for $74.99, $1.50 per 1,000) | Yes |
| Spaw vs NeverBounce | not published | not published | not published | not published |
| Spaw vs Verifalia | Pay-as-you-go credit packs that never expire, or monthly, quarterly and yearly subscriptions; verification depth is priced as quality levels | 25 free credits a day on the Free plan; unused daily credits expire each day | not published | not published |
| Spaw vs ZeroBounce | Pay-as-you-go credits that never expire, or the ZeroBounce ONE subscription; volume pricing shown through a calculator rather than fixed packs | 100 validation credits a month on the free account | not published | No |
Alternatives pages
Each page lists the other services to consider instead of one vendor, with the same published figures.
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