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IsValid pricing: email verification API

IsValid's sitellms.txtEmail validation API: 180+ verification providers comparedIsValid: email verification API alternatives

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50% complete: 3 of the 6 key fields we checkSee the 6 fields
$0.00per 1,000 emailsWe ran IsValid in our email verification API benchmark. We didn't score any IsValid plan.This plan is free. We rank 3,753 plans for email verification APIs by price. Half the plans cost $1.98 per 1,000 emails or less.treg's top-up from $10 is the cheapest paid plan per 1,000 emails: $0.00 on average. treg asks one provider after another until one answers. You pay $68.365 per 1,000 emails when no provider answers.Disify's $9 monthly plan (/email) covers any number of emails. Disify's $9 monthly plan costs less up front than treg's top-up from $10.MailTester Ninja, Enrich.so and GetProspect are the best email verification API providers in the Datacircle benchmark.
Plan: Free one of IsValid's 3 plans
Call: GET /v0/email IsValid's only call for this API
API: Email verification API one of IsValid's 3 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 3 of the 6 key fields we check. Address, Deliverability, Company.
  • Nothing to pay. You get 100 requests a day. Calls stop once your requests run out.
  • One call. You send value to GET /v0/email. You can also send checkMx. The call returns whether the address takes mail.
  • Anyone can get it. Keep data: no limit. Use data: with conditions.

IsValid: email verification API alternatives

IsValid alternatives: every email verification API provider ranked

The table starts with IsValid's cheapest paid plan. Next come plans from other providers with the price per 1,000 emails closest to IsValid's. We also show the Pushbuild plan. Its price is farther from the price of IsValid's cheapest paid plan.

IsValid, €49 monthlyPushbuild, freeNeutrino API, $50 monthly, Tier 2, GET /email-validateGMass, $59.95 monthlyEnvoAPI, $49 monthly, Launch, GET /v1/emails/disposableAPI Ninjas, $2,388 yearly
$ per 1,000 emails$0.018$0.00$0.017$0.017$0.019$0.02
Completeness50%50%50%33%33%50%
Billingmonthlyfreemonthlymonthlymonthlyyearly
Pay€49$0$50$59.95$49$2,388
Enough for100,000 calls a day3,125 results a month100,000 calls a day3,600,000 calls a month2,592,000 calls a month10,000,000 calls a month
Freshnessunknownunknownstoredlivestoredstored
Who can get itanyoneanyone with an email addressanyoneanyone with a Google account that subscribesanyone, for lawful, professional B2B purposes, not in a sanctioned jurisdiction or on a restricted-party listanyone 18 or over

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-05.

  1. isvalid.dev
  2. isvalid.dev/docs
  3. isvalid.dev/docs/email
  4. isvalid.dev/pricing
  5. isvalid.dev/terms

Product details

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

  • Address
  • Deliverability
  • Confidence, not in the answer
  • Name, not in the answer
  • Place, not in the answer
  • Company
Price
$ per 1,000 emails$0.00
Percall
Billingfree
Aggregators
Aggregatorsnone
Charges
Also pays forfrom the same budget: 76 other calls
Overage
Units caphard
Not found
$ per 1,000$0.00
In their words
Their pitchValidates email addresses. Checks RFC 5322 format compliance, domain structure, and optionally verifies that the domain has valid MX records.
Data
What it checksformat, mail servers
Keep datano limit
Use dataYou agree to use the Service strictly within the limits of your chosen subscription plan. [...] You must not attempt to circumvent rate limits through any means, including but not limited to: Creating multiple accounts to aggregate free-tier quotas, Using proxies, VPNs, or other technical measures to bypass rate limiting, Sharing API keys with third parties outside your organization, Reverse engineering or scraping the Service infrastructure [...] Abusive use of the Service is strictly prohibited. [...] if we determine in our sole discretion that you are engaged in: Automated abuse — running bots, scrapers, or scripts that place excessive load on the Service beyond normal API usage patterns, Fraudulent activity — using the Service to validate data for purposes of fraud, identity theft, spam, or phishing, Illegal use — any activity that violates applicable local, national, or international law, Reselling without authorization — offering the Service to third parties as your own product without a written reseller agreement, Security attacks — attempting to probe, scan, or test vulnerabilities of the Service or its underlying infrastructure
Plan
Pay€0
You get100 requests a day
Enough for100 calls a day
ExpiresRate limits reset at midnight UTC each day
Rate limit
Per day100
Batch1
Speed
Answerin the call
The call
You sendvalue. Optional: checkMx
MethodGET
Path/v0/email
About the plan
PlanFree
Who can get itanyone
The 4 fields the plan's answer can hold

valid, local part, domain, MX valid

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