# Abstract API alternatives for email verification

Email verification APIs to consider instead of Abstract API, with the pricing model, free tier and price per 1,000 verifications each vendor publishes. Figures come from public pricing pages checked on 2026-09-03.

| Service | Pricing model | Free tier | Price per 1,000 at about 10k |
| --- | --- | --- | --- |
| [Spaw](https://spaw.co) | Pay-as-you-go credit packs bought through Stripe Checkout; no subscription, credits never expire | 10 free credits every month, no card required | $7.80 (Growth pack: 5,000 credits for $39) |
| [Bouncer](https://www.usebouncer.com) | 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) |
| [Emailable](https://emailable.com) | 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) |
| [Hunter](https://hunter.io) | 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) |
| [Kickbox](https://kickbox.com) | not published | not published | not published |
| [Mailboxlayer](https://mailboxlayer.com) | 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) |
| [NeverBounce](https://www.neverbounce.com) | not published | not published | not published |
| [Verifalia](https://verifalia.com) | 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 |
| [ZeroBounce](https://www.zerobounce.net) | 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 |

## Spaw

Email verification API that bills per answered lookup: syntax, live MX, SPF and DMARC, disposable and role lists, and an SMTP mailbox handshake that never sends a message.

## Bouncer

Bouncer is an email verification service with pay-as-you-go credits that never expire, high-throughput batch APIs, a real-time form product (Bouncer Shield) and a Deliverability Kit subscription.

Comparison: https://spaw.co/compare/bouncer

## Emailable

Emailable is an email verification service with pay-as-you-go credits, a bulk verifier, a widget and an API, with Node.js, Ruby and Python libraries.

Comparison: https://spaw.co/compare/emailable

## Hunter

Hunter is an outreach platform whose Email Verifier shares unified plan credits with its email finder, enrichment and campaign tools.

Comparison: https://spaw.co/compare/hunter

## Kickbox

Kickbox is an email verification API that returns deliverable, undeliverable, risky or unknown plus a 0 to 1 Sendex quality score, with official libraries for PHP, Node.js, Ruby and Python.

Comparison: https://spaw.co/compare/kickbox

## Mailboxlayer

Mailboxlayer is apilayer's email validation API, sold as monthly request quotas from a free 100-request plan up to 250,000 requests a month.

Comparison: https://spaw.co/compare/mailboxlayer

## NeverBounce

NeverBounce is a ZoomInfo-owned email verification service with a bulk list-cleaning workflow, a real-time API and official client libraries in six languages.

Comparison: https://spaw.co/compare/neverbounce

## Verifalia

Verifalia is an email verification service with selectable quality levels, credit packs that never expire, subscriptions with daily free credits, and official SDKs in six languages.

Comparison: https://spaw.co/compare/verifalia

## ZeroBounce

ZeroBounce is an email validation service with a pay-as-you-go credit model and a subscription (ZeroBounce ONE) that bundles deliverability tools such as activity data, inbox placement tests and blacklist monitoring.

Comparison: https://spaw.co/compare/zerobounce

Abstract API and the other product names are trademarks of their owners. Spaw is not affiliated with them.

Reference: https://spaw.co/alternatives/abstract