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Interzoid pricing and alternatives: cached email verification API, GET /emailtrustscore

Interzoid's sitellms.txtBest cached email verification API in 2026
50% complete: 3 of the 6 key fields we checkSee the 6 fields
$0.00per 1,000 emailsThe cheapest of the 291 plans we rank by price is EnvoAPI, $29 pack. EnvoAPI's cached email verification API costs nothing beyond the plan price.
Plan: Free API key one of Interzoid's 9 plans
Call: GET /emailtrustscore one of Interzoid's 2 calls for this API
API: Cached email verification API one of Interzoid's 8 APIs

About this item

  • Stored. Interzoid may skip the mail server and answer from data it keeps. Interzoid doesn't say how old the data is.
  • 3 of the 6 key fields we check. Address, Deliverability, Confidence.
  • Nothing to pay.
  • One call. You send lookup to GET /emailtrustscore. You can also send language. The call returns whether the address takes mail.
  • Anyone can get it. Keep data: no limit. Use data: with conditions.

Interzoid: cached email verification API alternatives

The table starts with Interzoid's cheapest paid plan. Next come plans from other providers with the price per 1,000 emails closest to Interzoid's. Each plan in the table gives stored data.

Interzoid, $30,000 yearly, 1 Million Credits (annual), GET /emailtrustscoreElastic Email, $59 monthly, Email Marketing Starter (5,000 contacts), POST /verifications/{email}Byteplant, $674.50 pack, One-Time, 50,000 credits, GET /api/verifyStrale, pay as you go, x402 (USDC on Base), GET /x402/email-validateMailgun, $400 monthly, Scale, 500,000 emails a month, 5,000 validations included, GET /v4/address/validate
$ per 1,000 emails$62.50$11.80$13.49$32.40$80.00
Completeness50%50%17%50%33%
Billingyearlymonthlypay firstpay as you gomonthly
Pay$30,000$59$674.50per call$400
Enough for480,000 calls a year5,000 calls a month50,000 callsas many as you pay for5,000 calls a month
Freshnessstoredstoredstoredstoredstored
Who can get itanyoneanyone at least the age of majority in their jurisdiction, with a registered accountbusinesses and professionals with a business emailanyoneprofessional use only, not minors under the age of 18

Every cached email verification API provider we score, ranked

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-21.

  1. api.interzoid.com/openapi.json
  2. docs.interzoid.com/entries/api-license-keys
  3. interzoid.com/api
  4. interzoid.com/api-acceptable-use
  5. interzoid.com/api-pricing
  6. interzoid.com/api-terms-use
  7. interzoid.com/apis/email-trust-score
  8. interzoid.com/services/api-pricing

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

  • Address
  • Deliverability
  • Confidence
  • Name, not in the answer
  • Place, not in the answer
  • Company, not in the answer
Price
$ per 1,000 emails$0.00
Percall
Billingfree
Aggregators
Aggregatorsnone
Charges
Also pays forfrom the same budget: 56 other calls
Not found
$ per 1,000$0.00
In their words
Their pitchEvaluate email address quality with intelligent scoring from 0-99 for sales prospecting, lead qualification, triggering business processes, determining options for free trials, and anti-fraud protection.
Data
Freshnessstored
Keep datano limit
Use dataYou may use Service Outputs, including Enrichment Data, in your internal systems, applications, databases, workflows, reports, and business processes, provided that your use complies with these Terms, applicable law, and any applicable purchase, subscription, or usage terms. [...] You may not, and may not permit any third party to: Use the Services for unlawful, fraudulent, deceptive, abusive, harmful, or unauthorized purposes, Use the Services to build, train, benchmark, or improve a competing product or service without Interzoid's written permission, Resell, sublicense, lease, distribute, or provide the Services, Service Outputs, or Enrichment Data as a standalone data product, API, database, feed, or competing service, Scrape, harvest, copy, or bulk extract data from the Services except through authorized API calls or permitted product functionality, Use the Services in violation of privacy, data protection, intellectual property, export control, anti-spam, anti-discrimination, or other applicable laws, Use the Services, Service Outputs, or Enrichment Data to conduct unlawful surveillance, monitoring, tracking, stalking, harassment, intimidation, or doxxing of any individual, or to locate or identify an individual in order to threaten, endanger, harm, defraud, or extort that individual, Use the Services, Service Outputs, or Enrichment Data to re-identify individuals from data that has been anonymized, de-identified, aggregated, or pseudonymized, Use the Services, Service Outputs, or Enrichment Data to circumvent or defeat an individual's opt-out, do-not-contact, do-not-sell, suppression, consent withdrawal, or deletion request, or to reconstruct records that were required to be deleted or suppressed, Use the Services, Service Outputs, or Enrichment Data as a factor in establishing an individual's eligibility for credit, insurance, employment, housing, education, government benefits, or healthcare, or for any other purpose that would cause Interzoid to be considered a consumer reporting agency or Service Outputs to be considered a consumer report under the Fair Credit Reporting Act or any analogous law, Use the Services in any manner prohibited by the Acceptable Use Policy.
Plan
Pay$0
Rate limit
Batch1
Speed
Answerin the call
The call
You sendlookup. Optional: language
MethodGET
Path/emailtrustscore
About the plan
PlanFree API key
Who can get itanyone
The 5 fields the plan's answer can hold

email address, trust score, reasoning, status code, credits remaining

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