established · -1.6 marketcapability domainresourceschema

Email Verification

Score 24.2 / 100 67 providers +15 via APIs 49 APIs Search apis.io →
Business capabilities this tag reaches
Data & Reference Information Services 2 Cybersecurity Management 1
Variants seen in the corpus: Email ValidationEmail Verification

Providers using this tag (67)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 12 Complete, well-documented, and agent-ready
ArgorantB2BDataArtificial Intelligence1 API72.5ZeroBounceEmail DeliverabilityMarketingLead Scoring1 API69.4kawaa-comCompanySoftware-as-a-ServiceMarketing1 API68.0LastDatabaseContact DataLead GenerationB2B Data1 API67.9MailboxlayerEmailSMTPMX Records2 APIs67.8DeBounceDeliverabilityDisposable Email DetectionMX Records3 APIs67.0APIVerveAPI MarketplaceRESTJSONGraphQL1 API73.9HunterContact DiscoveryEmailLead Generation1 API73.1SendPulseMarketingMarketing AutomationEmailTransactional Email20 APIs72.3WappalyzerTechnology DetectionTechnographicsWebsite AnalysisCMS Detection2 APIs69.4Snov.ioSales AutomationEmail FinderLead Generation1 API68.5InstantlyCold EmailOutboundSalesDeliverability2 APIs67.8
Strong 21 Solid coverage with minor gaps
NeverBounceEmail HygieneDeliverabilityMarketing1 API63.0mobilevalidate-comFraud PreventionPhone ValidationAPI Service1 API61.5KickboxDeliverabilityData QualityEmail2 APIs61.1MailflossMarketingSoftware-as-a-ServiceAutomation2 APIs60.3BillionVerifySoftware-as-a-ServiceData QualityB2B1 API57.7verifly-emailMCPDeveloper ToolsVerification2 APIs56.71LookupPhone ValidationIP IntelligenceFraud and Risk3 APIs65.3EnrichData EnrichmentContact DiscoveryWeb IntelligenceB2B Data7 APIs62.2ProspectAPIsCompanyFundingResearchData1 API62.0APIFreaks - API Hub for DevelopersIP IntelligenceGeolocationWHOISDomain Intelligence104 APIs61.6Abstract APIAvatarsCompany EnrichmentContactsCurrency13 APIs61.4ExperianCompanyCredit BureauCredit ReportingIdentity Verification11 APIs60.9leadmagic-ioB2BData EnrichmentLead Generation2 APIs60.9broke2builtCompanyAI AgentsAgent ToolsData Intelligence2 APIs59.6RevenueBaseCompanyB2B DataData Enrichment2 APIs58.9MailerSendEmailTransactional EmailSMTPMarketing1 API57.5CustomerOSCRMRevenueGo-To-MarketLead Intelligence9 APIs57.2EvabootLead GenerationSalesData Cleaning1 API57.0APIMeshWeb AnalysisSEOWeb Security2 APIs55.9UpLeadB2BLead GenerationContact DataCompany Data1 API54.7MCP360MCPMCP ServerMCP GatewayAI Agents38 APIs54.3
Developing 21 Usable, with meaningful gaps to close
Email Verifier APIDeliverabilitySMTP CheckBounce Prevention1 API52.1checkmailsCompanySMTPGDPR1 API49.9uCheckerEmailSMTPDNS1 API49.4pricklymails-comSoftware-as-a-ServiceData ValidationEU-hosted1 API48.7Easy Email VerificationSoftware-as-a-ServiceData ValidationMarketing1 API48.5mailprobe-devCompanyReal-TimeDeveloper Tools1 API47.8inboxpolicy-comCompanyArtificial IntelligencePayments1 API43.3InboxTrueCompanySoftware-as-a-ServiceDeveloper Tools1 API42.5envoapi-comData EnrichmentB2BLinkedIn2 APIs40.8ClearBounceList CleaningForm ValidationDeliverability2 APIs39.5PabblyAutomationEmail MarketingSubscription BillingBilling7 APIs53.6WhoAPICompanyDomainsWHOISDomain Availability1 API53.5ContactOutCompanyContact DataEmail FinderData Enrichment15 APIs53.2isBusinessEmailCompanyBusinessToolsEU-hosted1 API52.9NeuralVerge APICompany DataPeople DataContact EnrichmentEmail Finder1 API48.8tryverifyemail-comCompanyData ValidationDeliverability1 API48.7FFraudFraud PreventionIP LookupDevice Fingerprinting1 API48.2Dilli LabsCompanyIP GeolocationIP Validation2 APIs46.7EmailKindEmailData EnrichmentSoftware-as-a-Service1 API46.0Return PathCompanyMarTechEmailEmail Deliverability11 APIs44.5LoqateAddress ValidationData QualityPhone Validation1 API42.8
Thin 10 Limited public surface area
SimpleVerifierSoftware-as-a-ServiceBulkToolsSecurity1 API36.1DerrickData EnrichmentEmail FinderPhone Findercompany-firmographics2 APIs35.0Giggal.aiSoftware-as-a-ServiceB2BData Cleaning1 API33.4inboxvet-comCompanySoftware-as-a-ServiceMarketing2 APIs32.0LeadMarinaPhone VerificationOutbound Outreach2 APIs38.8contactlint-comPhone ValidationMCPDeveloper Tools1 API38.5TerminusCompanyAccount Based MarketingMarketingAdvertising3 APIs33.7MailgunEmailTransactional EmailSMTP1 API31.6FindLeadEmailsEmail FinderBulk Processing1 API27.2IPQualityScoreFraud PreventionIP ReputationProxy Detection1 API27.1
Emerging 3 Early or largely undocumented
EmailListCheckerArtificial IntelligenceSoftware-as-a-ServiceData Cleaning25.2RankFabrikDataWeb ScrapingLocal BusinessPlaces4 APIs18.9Email List ValidationData CleaningAPI ServiceMarketing Tools18.4

APIs with this tag (49)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Exemplar 17 Complete, well-documented, and agent-ready
Telnyx Email Verification APIVerify ownership of a DIR's authorizer email. A short code is emailed and confirmed; the email must be veri...93.5Twilio Email Validation APIValidate email addresses90.8APIVerve GraphQL API (alpha)Single GraphQL endpoint that fans out to multiple APIs in one request. Explicitly labeled alpha / not for p...73.9APIVerve MCP ServerHosted remote MCP server (streamable HTTP) exposing every catalog endpoint as individual MCP tools with inp...73.9Edge Impulse Email Verification APIThe Email Verification API from Edge Impulse — 4 operation(s) for email verification.71.5ZeroBounce Bulk APIAsynchronous file-job surface for bulk email validation, bulk AI scoring, bulk email finder, bulk domain se...69.4ZeroBounce Email Validation APIReal-time and batch email validation API including credit balance, API usage, file submission and retrieval...69.4ZeroBounce Email Validation API (EU)EU-region endpoint of the ZeroBounce v2 email validation API for customers requiring European data residenc...69.4ZeroBounce Email Validation API (US)US-region endpoint of the ZeroBounce v2 email validation API. Introduced October 2025 alongside the EU host...69.4ZeroBounce MCP ServerOfficial ZeroBounce Model Context Protocol server, published by ZeroBounce under Apache-2.0 and distributed...69.4Live Direct Marketing Email Verification APIThe Email Verification API from Live Direct Marketing — 2 operation(s) for email verification.68.7Snov.io Email Verification APIVerify the deliverability and validity of up to 10 email addresses per request using a two-step async API. ...68.5Snov.io Email Verification APIVerify email deliverability and validity68.5Instantly Email Verification APIA single email verification67.8Mailboxlayer Email Validation APIREST/JSON API for real-time email validation: syntax check, typo suggestions, MX-record lookup, SMTP verifi...67.8Blueshift Email validation APIValidate single or bulk email addresses to assess deliverability and risk.67.7HighLevel Email Verification APIDocumentation for Email ISV API66.9
Strong 13 Solid coverage with minor gaps
1Lookup MCP ServerFirst-party hosted/remote MCP connector with OAuth 2.1 auth (authorization code + PKCE, dynamic client regi...65.31Lookup REST APIRESTful API over HTTPS covering all 1Lookup products (phone/email/IP validation, fraud, enrichment, B2B dat...65.3AnyAPI Email Verification APIThe email-verification API from AnyAPI — 5 operation(s) for email-verification.65.0NeverBounce API v4RESTful JSON API for email verification. Provides single email verification (`/single/check`), bulk job ver...63.0Enrich Email Validation APIThe Email Validation API from Enrich — 4 operation(s) for email validation.62.2Enrich Email Verification APIValidate email addresses for deliverability.62.2ProspectAPIs Email verification APICheck email addresses for deliverability before you send.62.0ProspectAPIs Main APIThe primary REST API for ProspectAPIs covering funding, companies, research, email verification, and watchl...62.0Kickbox Email Verification APIREST API for verifying the deliverability of email addresses in real time. Returns a result (deliverable, u...61.1Experian Email Validation APIThe Email Validation API from Experian — 2 operation(s) for email validation.60.9CustomerOS Email Verification APIThe Email Verification API from CustomerOS — 4 operation(s) for email verification.57.2Gatana Email Verification APIThe email-verification API from Gatana — 1 operation(s) for email-verification.56.2MCP360 Email Verification APIThe email-verification API from MCP360 — 2 operation(s) for email-verification.54.3
Developing 7 Usable, with meaningful gaps to close
Pabbly Email Verification APIREST API for Pabbly Email Verification. A single operation, POST /email-lists/verify-single, returning a de...53.6checkmails MCP ServerRemote MCP server for email verification from AI assistants, advertised in the checkmails OpenAPI info.desc...49.9Dilli Email Validation API (DEVA)Validates an email address; documented usage is GET https://deva.dillilabs.com/api/{API_KEY}/email/{address...46.7Openprovider Email Verification APIThe Email Verification API from Openprovider — 3 operation(s) for email verification.43.3Ambolt email validation APIThe email validation API from Ambolt — 1 operation(s) for email validation.42.9Just Domain Email Verification APIThe Email Verification API from Just Domain — 6 operation(s) for email verification.42.8getapi-nl Email Validation APIThe Email Validation API from getapi-nl — 3 operation(s) for email validation.41.2
Thin 8 Limited public surface area
SuperTokens Email Verification APIEmail verification token creation and validation35.6Derrick MCP ServerHosted streamable-HTTP MCP server exposing 12 enrichment tools; also available as a local npm package (derr...35.0Derrick REST APIREST API for B2B data enrichment (emails, phones, profile/company enrichment, verification, search, SIRET/S...35.0Verify APIEmail verification API — single-address real-time validation and asynchronous CSV batch verification, sold ...33.7Mailgun Email Validation APIREST API for verifying email addresses in real time, bulk list validation, and deliverability scoring to re...31.6DISQO CoReg APIValidate an email address for co-registration flows — checks address format, whether the address already ex...30.6IPQualityScore Email Validation APIThe Email Validation API from IPQualityScore — 1 operation(s) for email validation.27.1Power2SME Email Verification API26.9
Emerging 4 Early or largely undocumented
CaptionsTimestamped/segmented video transcript retrieval, up to 50 videos per call. Billed per transcript returned.18.9JobsJob posting collection that segments by publish window/area to exceed the public 1,000-result cap. Billed p...18.9PlacesLocal business data collection via geo point + radius sweep with deduplication on place ID; optional email ...18.9VerifyEmail verification via syntax, disposable-domain, MX and SMTP dialogue checks (no message sent), up to 100 ...18.9

Companies reaching this through an API (15)

These companies publish an API, specification or operation carrying “Email Verification” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

Ambolt AnyAPI Blueshift DISQO Edge Impulse Gatana getapi-nl HighLevel Just Domain Live Direct Marketing Openprovider Power2SME SuperTokens Telnyx Twilio

Score breakdown

Frequency
54.2
log-scaled weighted occurrences
Breadth
0.9
spread across providers
Quality lift
52.0
mean composite of providers using it
Cohesion
0.0
strength of nearest seed neighbor

Where this tag sits

Email broader

Related tags

Deliverability 17 co-occurrences Phone Validation 9 co-occurrences Email Finder 9 co-occurrences Data Enrichment 21 co-occurrences Data Quality 11 co-occurrences IP Intelligence 5 co-occurrences WHOIS 5 co-occurrences Data Validation 5 co-occurrences

Where this tag comes from

Provider tag67
Api tag49
Openapi tag20
Openapi op tag50

Cohort brief

Auto-generated

The 66 providers in the APIs.io catalog tagged Email Verification, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
66
of 67 in the catalog
Mean Kin Score
51.9
+27.8 vs catalog 24.1
Mean Agent Readiness
37.3
+23.2 vs catalog 14.1
Spread
18.4–73.9
median 53.6 · σ 13.7
How the 66 split by band
Exemplar 12Strong 20Developing 21Thin 10Emerging 3Minimal 0
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Access Clarity 69.5 30 +39.5 66
Developer Ergonomics 53.5 24.5 +29 66
Contract Quality 46.2 18.6 +27.6 66
Operational Transparency 36.6 13.2 +23.4 66
Contract Governance 22.6 9.7 +12.9 66
Discoverability 68.9 59.1 +9.8 66

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 61% 18% +43
MCP server (first-party) 61% 16% +45
Agent Skills 0% 0% 0
OAuth scopes 30% 13% +17
Security 100% 99% +1
Arazzo workflows 3% 1% +2
Governance rules 86% 36% +50

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 APIVerve 73.9
  2. 2 Hunter 73.1
  3. 3 Argorant 72.5
  4. 4 SendPulse 72.3
  5. 5 Wappalyzer 69.4
  6. 6 ZeroBounce 69.4
  7. 7 Snov.io 68.5
  8. 8 kawaa-com 68
  9. 9 LastDatabase 67.9
  10. 10 Instantly 67.8
Top by Agent Readiness
  1. 1 Argorant 65
  2. 2 ProspectAPIs 63.9
  3. 3 LastDatabase 63.4
  4. 4 Mailfloss 62.6
  5. 5 DeBounce 60.8
  6. 6 Instantly 60.5
  7. 7 Hunter 59.4
  8. 8 kawaa-com 59.3
  9. 9 leadmagic-io 58.1
  10. 10 MailerSend 56.3
All 67 members of this roster resolve to a provider in the catalog; 66 carry a score (99%). The figures above describe the scored members only.Generated from the catalog build of 14 November 2026, across 41591 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

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Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
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