ZeroBounce suits businesses that need to validate email lists, check deliverability or find professional email addresses.
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Best Email Verification APIs 2026
Facts read 28 Sep 2026 – 14 Oct 2026
These APIs screen email addresses before sending, helping teams limit invalid, disposable, role-based, catch-all, or unreachable entries.
The standings: top 10
| Name | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|
| 01 ZeroBounce | 6.0 | Free plan | Free plan | Android, iPhone & iPad, Web, Browser extension | 14 Oct 2026 |
| 02 Bouncer | 5.4 | $25 a month | Free plan | Web, API | 3 Oct 2026 |
| 03 MailboxValidator | 5.4 | $19.95 one-time | Free plan | Web, API | 9 Oct 2026 |
| 04 MillionVerifier | 5.4 | Free plan | Free plan | Web, API | 30 Sep 2026 |
| 05 Mailbeam | 5.3 | €19 a month | Free plan | Web, API | 7 Oct 2026 |
| 06 EmailListVerify | 5.2 | €16 a month | Free plan | Web, Browser extension, API | 8 Oct 2026 |
| 07 EmailValidator | 5.1 | Free plan | Free plan | Web, API | 4 Oct 2026 |
| 08 Cloudmersive Email Verification API | 5.0 | $19.99 a month | Free plan | API, Self-hosted | 7 Oct 2026 |
| 09 Email List Validation | 5.0 | $14 a month | Free plan | Web, API | 3 Oct 2026 |
| 10 usecheck | 5.0 | $19 a month | Free plan | Web, API | 7 Oct 2026 |
Use the list to compare free plans, paid starting points, platform options, real-time and batch verification, and mailbox checks. It is ordered by newest releases first, with maker-published figures and no score.
02
Bouncer
WebAPI Record5.4 Visit
03
MailboxValidator
MailboxValidator suits teams that need to check individual addresses through an API or validate uploaded lists in bulk.
WebAPI Record5.4 Visit
04
MillionVerifier
WebAPI Record5.4 Visit
05
Mailbeam
Mailbeam suits developers and teams that want to verify addresses in signup flows or process uploaded lists.
WebAPI Record5.3 Visit
12
QuickEmailVerification
WebAPI Free plan Record4.9 Visit It suits marketers, developers, agencies and businesses that need to check email lists or verify addresses during signup.
13
Reoon Email Verifier
WebAPI Free plan Record4.9 Visit It is suited to email marketers, list owners, SaaS apps, websites, and lead-generation teams that need to check addresses.
14
Emailable
WebAPI $32.30 a month Record4.8 Visit Emailable suits teams that need to verify addresses in bulk or at the point of entry, and developers connecting checks through an API.
19
Abstract Email Validation API
WebAPI $17 a month, billed yearly Record4.6 Visit The API suits developers validating addresses in signup flows, cleaning lead lists, or checking B2B contacts.
20
MyEmailVerifier
WebBrowser extensionAPI Free plan Record4.6 Visit MyEmailVerifier is presented for email marketers, SaaS businesses, e-commerce stores, lead generation teams, and CRM teams.
22
emailverifier.dev
WebAPI Free plan Record4.5 Visit It is designed for product teams adding email checks to signups, free trials, lead forms, CRM imports, and other application workflows.
Before you choose
Compare free access
Check each listing for a free plan or free trial before choosing.
Check what the free option includes before choosing a paid plan, and note whether a trial or plan fits your intended verification work.
Match your platform
The listed tools run on API, web, extension, self-hosted, iOS, or Android platforms.
Choose a platform that fits how your team sends addresses for checking. Confirm the supported platform before you build an integration.
Choose the checks you need
Compare real-time API support with batch verification when selecting a workflow.
Look for support for disposable, role-account, catch-all, and SMTP mailbox checks that match your address-screening needs.
Read the pricing detail
Pricing entries include free plans, paid starting prices, and pricing on request. Paid starting points use the currency and billing term shown by the maker.
Check the current plan terms before committing, especially when a listing gives an annual rate or a starting price without a full quote.
Questions
What is an email verification API used for?
It checks email addresses through an API or another listed platform before you use them for sending.
Where can these tools run?
They are listed for API, web, extension, self-hosted, iOS, and Android use.
Can I try an email verification tool for free?
Check each listing for a free plan or free trial; availability and terms vary by tool.
Which verification capabilities are worth comparing?
Look at real-time API and batch verification, plus disposable, role-account, catch-all, and SMTP mailbox checks.
How is pricing shown?
Listings may show a free plan, a paid starting price, or pricing on request. Check the maker's current terms.
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