Datacircle

RelentlessIdentity pricing: email finder API, POST /client/attempt

RelentlessIdentity's siteThis page as plain textEmail finder API: the best of 90+ providers comparedRelentlessIdentity: email finder API alternatives

Is RelentlessIdentity yours? Write to us about this page. We invite selected tool providers to our WhatsApp group.

10% complete: 1 of the 10 key fields we checkSee the 10 fields
found live
$0.00per 1,000 emailsIn our email finder API benchmark, the best plan from RelentlessIdentity scores 64.8 out of 100. RelentlessIdentity ranks 27th of 93 providers.This plan is free. We rank 1,627 plans for email finder APIs by price. Half the plans cost $20.00 per 1,000 emails or less.ClearBounce's $3.20 monthly plan costs the least per 1,000 emails. ClearBounce's $3.20 monthly plan charges nothing per call. You get as many emails as ClearBounce's rate limit allows.ClearBounce's $4 pack covers any number of emails. ClearBounce's $4 pack costs more up front than ClearBounce's $3.20 monthly plan.DiscoLike, GetProspect and Icypeas are the best email finder API providers in the Datacircle benchmark.
Type a number to see the cheapest RelentlessIdentity plan for that many emails. The table below then sorts the other plans by what each costs.
Plan: Free one of RelentlessIdentity's 23 plans
Call: POST /client/attempt one of RelentlessIdentity's 2 calls for this API
API: Email finder API one of RelentlessIdentity's 2 APIs

About this item

  • Live. RelentlessIdentity finds the email when you call the API.
  • 1 of the 10 key fields we check. Catch-all domain.
  • Nothing to pay.
  • One call. You send full_name and email_domain to POST /client/attempt. The call returns the email.
  • Who can get it: anyone 16 or older, for lawful professional and business purposes. Keep data: no limit. Use data: with conditions.

RelentlessIdentity: email finder API alternatives

RelentlessIdentity alternatives: every email finder API provider ranked

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

RelentlessIdentity, $11,988 yearly, $11,988 Annual, POST /client/attemptEdges, $1,539 monthlyMyEmailVerifier, top-up from $54, Pay-As-You-Go, 50,000 emails + 2,500 bonus, POST /leads/search/{apikey}NinjaPear, $22,788 yearlyVeriMails, $39 monthly, Pro, POST /api/find-email/csv
$ per 1,000 emails$15.504$15.39$15.429$15.429$15.60
Completeness10%10%20%0%10%
Billingyearlymonthlypay firstyearlymonthly
Pay$11,988$1,539$54$22,788$39
Enough for773,219 calls a year100,000 calls a month3,500 calls105,500 calls a month2,500 results a month
Freshnesslivelivelivelivelive
Who can get itanyone 16 or older, for lawful professional and business purposesprofessionals (anyone acting for their commercial, industrial or liberal activity)anyoneanyone, for their internal business purposesanyone

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. relentlessidentity.com/
  2. relentlessidentity.com/acceptable-use
  3. relentlessidentity.com/api/reference/spec
  4. relentlessidentity.com/docs/catch-all-verification
  5. relentlessidentity.com/docs/crypto-payments
  6. relentlessidentity.com/docs/response-semantics
  7. relentlessidentity.com/docs/rest-api-reference
  8. relentlessidentity.com/llms.txt
  9. relentlessidentity.com/pricing
  10. relentlessidentity.com/privacy
  11. relentlessidentity.com/terms

Product details

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

  • Verification, not in the answer
  • Confidence, not in the answer
  • Catch-all domain
  • Where found, not in the answer
  • Personal email, not in the answer
  • Name, not in the answer
  • Job title, not in the answer
  • Company, not in the answer
  • LinkedIn URL, not in the answer
  • Location, not in the answer
Price
$ per 1,000 emails$0.00
Percall
Billingfree
Strengths
Strengthsfound live
Aggregators
Aggregatorsnone
Not found
$ per 1,000$0.00
Catch-all
$ per 1,000$0.00
In their words
Their pitchUse Finder when you have a person's full name and company domain.
Data
Freshnesslive
What it checksmail servers, mailbox
Keep datano limit
Use dataYou may use the service only for lawful professional and business purposes, including sales and marketing validation, SaaS data hygiene, recruiting, fraud prevention, underwriting, and account verification. You agree not to: Use the service for spam, scams, or harassment, Discover or disclose consumer personal email addresses, Attempt credential attacks, phishing, or account takeover, Interfere with or disrupt the service, Introduce viruses, malware, or harmful code, Use the service to facilitate illegal activity, Violate the rights of others or evade privacy preferences
Plan
Pay$0
Rate limit
Batch1
Speed
Answerin the call
Median19.07 s
The call
You sendfull_name, email_domain
MethodPOST
Path/client/attempt
About the plan
PlanFree
Who can get itanyone 16 or older, for lawful professional and business purposes
The 12 fields the plan's answer can hold

state, outcome, email, is alias, alias original, alias resolved, catch-all, identity providers, MX hosts, request ID, identity provider hostname, alternatives

Best GTM APIs