Datacircle

Watch-IP Email verification API pricing: POST /v1/email/validate

Watch-IP's siteThis page as plain textEmail validation API: best verification providers comparedWatch-IP: email verification API alternatives

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50% complete: 3 of the 6 fields on our checklistSee the 6 fields
$0.00per 1,000 emailsWe haven't run Watch-IP through our email verification API benchmark yet.This plan is free. We rank 4,767 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails. 728 email verification API plans on our price sheet are free. pingutil's free plan scores highest of the free plans in our benchmark, at 82.3 out of 100.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. StableEnrich's pay-as-you-go plan costs the least for 10,000 emails a month: $0.05.Disify's $9 monthly plan (/email) covers any number of emails, and costs less up front than treg's top-up from $10.Validemail.co, pingutil and looot are the best email verification API providers in the Datacircle benchmark.
Type a number to see the cheapest Watch-IP plan for that many emails. The table below then sorts the other plans by what each costs.
Plan: Free one of Watch-IP's 8 plans
Call: POST /v1/email/validate one of Watch-IP's 3 calls for this API
API: Email verification API one of Watch-IP's 2 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 3 of the 6 fields on our checklist. Address, Deliverability, Company.
  • Nothing to pay. You get 10,000 requests a month. Calls stop once your requests run out.
  • One call. You send email to POST /v1/email/validate. The call returns whether the address takes mail.
  • Who can get it: anyone with an account. Keep data: no limit. Use data: with conditions.

Watch-IP: email verification API alternatives

Watch-IP alternatives: other email verification API providers by price

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

Watch-IP, $853.20 yearly, Scale, POST /v1/email/validateStormap, free, No keyEmailValidationTool, $40 pack, Agency LTD, POST /v1/verify/singleproxycheck.io, $54.89 yearlyBotoi, $49 monthly, Pro, POST /v1/disposable-email/checkApiZero, CNY 3,999 yearly
$ per 1,000 emails$0.014$0.00$0.014$0.015$0.016$0.016
Completeness50%50%67%33%50%50%
Billingyearlyfreepay firstyearlymonthlyyearly
Pay$853.20$0$40$54.89$49CNY 3,999
Enough for5,000,000 calls a month600 calls a month4,000 calls a day10,000 results a day100,000 calls a day100,000 calls a day
Freshnessunknownunknownunknownstoredstoredunknown
Who can get itanyone with an accountanyone, with no key or account, limited per IP addressanyone at least 18 years old with the legal authority to enter its termsanyone with a non-disposable email addressanyone 18 or olderanyone with an account (acting for an organization, authorized to act for it)

Sources

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

  1. api.watch-ip.com/openapi.json
  2. watch-ip.com
  3. watch-ip.com/docs/errors
  4. watch-ip.com/docs/reference/email
  5. watch-ip.com/legal/terms
  6. watch-ip.com/pricing
  7. watch-ip.com/products/disposable-email-detection

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: Check a batch of email addresses · Submit an email list for asynchronous checking · Look up the requesting visitor's geolocation · Look up geolocation for an arbitrary IP address · Look up geolocation for a batch of IP addresses · Score a signup from its email address and IP · Check an IP against a user's last-known location for impossible travel
Overage
Units caphard
Not found
$ per 1,000 calls that find nothing$0.00
In their words
Their pitchGive your signup form an early check on every address: syntax, known disposable/temporary domains, whether the domain has a mail server at all, likely typos and role addresses — returned as an accept, review or reject verdict with the reasons behind it.
Data
What it checksformat, mail servers, disposable domains, role addresses
Keep datano limit
Use dataYou may use the Service only for lawful purposes and in compliance with these Terms, our Privacy Policy, and (where applicable) our Data Processing Addendum. Without limiting the foregoing, you agree not to: [...] use the Service to build or contribute to a competing IP geolocation, threat-intelligence, or lookup product, or to systematically reconstruct our underlying threat lists or GeoIP data through repeated queries, use geolocation, VPN/Tor/datacenter, or risk-scoring output as the sole automated basis for a decision that produces legal or similarly significant effects for an individual [...] without a meaningful human review step, use the Service to discriminate against, single out, or take adverse action against individuals on the basis of a protected characteristic that can be inferred or approximated from location data, [...] We grant you a non-exclusive, non-transferable license to call the API and use the dashboard for your own internal business purposes and to serve your own end users. You may not resell, sublicense, or provide standalone access to the Service's underlying data (as opposed to a product or feature you've built using it) without our prior written consent.
Plan
Pay$0
You get10,000 requests a month
Enough for10,000 calls a month
Rate limit
Per second0.5 (30 a minute)
Batch1
Speed
Answerin the call
The call
You sendemail
MethodPOST
Path/v1/email/validate
About the plan
PlanFree
Who can get itanyone with an account
The 14 fields the plan's answer can hold

email address, domain, syntax valid, disposable, normalized email, canonical email, disposable source, free provider, role address, did you mean, MX status, MX host, verdict, reasons

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