Abstract Email Validation API
Abstract Email Validation API: Broad email verification coverage for developers, growth teams, and enterprise workflows. Ranked #2 of 31 in Email Verification APIs by our editors (9.3/10); pricing: Free plan; best for broad API and verification coverage.
At a glance
- Editor score9.3 / 10
- PricingFree plan
- Best forBroad API and verification coverage
- Free planYes
- Paid from$17/mo
- Real-time APIYes
- Facts checked20 Sep 2026
Where it wins
- Checks syntax, MX records, SMTP mailboxes, and disposable domains
- Combines real-time API checks with bulk CSV list verification
- Offers 15 integrations, including HubSpot, Salesforce, and Mailchimp
Where it doesn't
- Advanced verification signals depend on the selected plan
- Enterprise pricing uses flexible requests and a commercial license
- Not open source; access is through web and API platforms
Our verdict on Abstract Email Validation API
Abstract Email Validation API is a developer-focused service for checking email addresses before signup, checkout, or transactional submission. Its REST API returns structured JSON for syntax, typo, MX record, SMTP mailbox, disposable-domain, catch-all, and role-account checks. It also supports bulk CSV upload and list verification, making it suitable for startups, developers, public companies, and enterprise teams managing both individual submissions and larger address lists.
The plan structure covers basic validation through broader risk and quality signals. Free costs $0 per month and includes email deliverability, sender, domain, quality, risk, and breach features. Starter costs $17 per month with annual billing or $19 monthly, adding domain whitelisting, bulk CSV upload, and the full API response. Standard costs $37 per month annually or $35 monthly, with sender and domain checks plus the Starter capabilities. Professional costs $39 per month on either billing option and includes quality, risk, and breach data. Enterprise adds flexible monthly requests, flexible requests per second, a commercial license, SOC 2 and GDPR, enhanced SLA and support, and a dedicated account manager.
Its breadth is the main reason to consider it: the service combines real-time REST validation, SMTP mailbox checks without sending a message, typo suggestions, risk data, breach data, and batch verification. The ecosystem includes 15 integrations spanning HubSpot, AWS, Salesforce, Zapier, GCP, Azure, Splunk, Snowflake, Shopify, Pipedream, Pardot, NetSuite, Marketo, Make, and Mailchimp. Choose it when one verification service needs both API coverage and list cleaning. Teams seeking open-source software or a narrower validation tool may prefer a more focused alternative.
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Abstract Email Validation API pricing
All 5 Abstract Email Validation API plans and prices →
Abstract Email Validation API fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $17/mo |
| Real-time API | Yes |
| Batch verification | Yes |
| Disposable detection | Yes |
| Role account detection | Yes |
| Catch-all detection | Yes |
| SMTP mailbox check | Yes |
| Deployment | Cloud |
| Platforms | Web |
| Compliance & security | SOC 2, GDPR, SSO/SAML |
| Support | Email, Live chat, Phone · 24/7 |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 17 integrations: HubSpot, AWS, Salesforce, Zapier, GCP, Azure … See all → |
| Pricing | Free plan (source) |
| Website | abstractapi.com |
| Facts checked | 20 Sep 2026 |
Abstract Email Validation API integrations
Abstract Email Validation API lists 17 integrations on its own site.
- HubSpot
- AWS
- Salesforce
- Zapier
- GCP
- Azure
- Splunk
- Snowflake
- Shopify
- Pipedream
- Pardot
- NetSuite
- Marketo
- Make
- Mailchimp
- Magento
- Databricks
See all Abstract Email Validation API integrations →
Alternatives to Abstract Email Validation API
- QuickEmailVerificationA flexible, low-cost verifier for API workflows, bulk lists, and signup forms.9.4
- BouncerFlexible email verification with non-expiring credits, APIs, forms, and integrations.9.2
- ZeroBounceA broad email verification toolkit with APIs, scoring, monitoring, and deliverability tools.9.1
See all Abstract Email Validation API alternatives →
Abstract Email Validation API vs the competition
- Abstract Email Validation API vs QuickEmailVerification
- Abstract Email Validation API vs Bouncer
- Abstract Email Validation API vs ZeroBounce
- Abstract Email Validation API vs Clearout Email Verification
- Abstract Email Validation API vs Verifalia
- Abstract Email Validation API vs BillionVerify
Compare Abstract Email Validation API with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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