API review

Findymail API review

Real-time verified B2B email finder (with catch-all verification and a <5% bounce refund guarantee), plus verifier, phone finder, reverse lookup, Intellimatch AI lead search, signals and MCP. Best for high-value contacts where a contractual <5% bounce guarantee matters.

Verified 25 Oct 2026 · 20 endpoints listed · Official MCP server

See pricing

Findymail API docs

What a call costs

The actions you pay for, as Findymail prices them.

Action	Cost	Per
Email found (finder)	1 finder credit	per verified email found; misses free
Phone found	10 finder credits	per phone found (non-EU)
Email verification	1 verifier credit	per verification, any result
Company lookup	1 finder credit	per company found
Reverse email	1 finder credit (+1 with profile)	per profile found
Employees	1 finder credit	per employee returned
Lookalike companies	1 finder credit	per 10 companies, rounded up
Technographics	1 finder credit	per domain with results

Show all 9 priced actionsHide the rest

Action	Cost	Per
Signal delivered	1 to 3 finder credits (+ enrichment)	per signal

Pricing, plan by plan

US dollars, as Findymail's pricing page shows them on 25 Oct 2026. Monthly and annual billing are shown apart.

Free tier Free account, no credit card: 10 finder credits and 10 email verifications, one-time (pricing page schema.org offer 'Free Trial'; FAQ says '10 credits')

Individual (usage-based)

$99/mo

billed monthly

$99/mo

monthly billing only

'Generous' usage (no published number), 1 seat, 5 active signals, standard processing

API included

Plan details

None charged; requests blocked (429) until capacity frees up or you upgrade

Team (usage-based)

$399/mo

billed monthly

$399/mo

monthly billing only

5x Individual usage, 5 seats, 25 active signals, priority processing

API included

Plan details

Blocked at capacity

Scale (usage-based)

$999/mo

billed monthly

$999/mo

monthly billing only

20x Individual usage, 20 seats, 100 active signals, fastest processing

API included

Plan details

Blocked at capacity

Basic (credit-based)

$49/mo

billed monthly

$41/mo

billed annually

1,000 finder + 1,000 verifier credits/mo (12,000 each/yr on annual)

API included

Plan details

Auto refill / top-ups; rollover capped at 2x

Starter (credit-based)

$99/mo

billed monthly

$83/mo

billed annually

5,000 finder + 5,000 verifier/mo (60,000 each/yr)

API included

Plan details

Auto refill / top-ups

Business (credit-based)

$249/mo

billed monthly

$208/mo

billed annually

15,000 finder + 15,000 verifier/mo (180,000 each/yr)

API included

Plan details

Auto refill / top-ups

Show all 11 plansShow fewer plans

Business Plus (credit-based)

$399/mo

billed monthly

$333/mo

billed annually

30,000 finder + 30,000 verifier/mo (360,000 each/yr)

API included

Plan details

Auto refill / top-ups

Scale 50K (credit-based)

$549/mo

billed monthly

$458/mo

billed annually

50,000 finder + 50,000 verifier/mo (600,000 each/yr)

API included

Plan details

Auto refill / top-ups

Scale 100K (credit-based)

$849/mo

billed monthly

$708/mo

billed annually

100,000 finder + 100,000 verifier/mo (1,200,000 each/yr)

API included

Plan details

Auto refill / top-ups

Enterprise

Custom quote

Custom usage, seats, signals; custom volume pricing

API included

Datacare (CRM hygiene service)

Custom quote

Starting from $500/month billed annually, priced on CRM contact/company count

Rate limits

Concurrency-based, not per-minute: each endpoint caps simultaneous in-flight requests (300 for name search, verify, phone, reverse email, company, technologies; 50 for business-profile, employees, Intellimatch, lookalike, exclusion lists; 10 for deprecated domain search; technology catalog search 10 req/min).

Limit	Individual	Team	Scale	Credit-based plans
Max Simultaneous	25	50	150	per-endpoint limits (up to 300)

How to get an API key

Findymail uses API key. The steps below follow Findymail's own docs.

Create a Findymail account. API access starts on the Basic (credit-based) plan.
app.findymail.com/user/api-tokens (free account: 10 finder + 10 verifier credits, one-time)
Send it with every request: header Authorization: Bearer <token>.

Make a first call: Find a verified work email from name + company. Keep the key in an environment variable, never in the command.

curl -X POST "https://app.findymail.com/api/search/name" \
  -H "Authorization: Bearer $FINDYMAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'

Where the docs live

What	Where
Documentation	app.findymail.com/docs
API reference	app.findymail.com/docs
OpenAPI spec	app.findymail.com/docs/openapi.yaml
llms.txt	app.findymail.com/llms.txt
Base URL	`https://app.findymail.com`
MCP server	`https://mcp.findymail.com/mcp`
SDKs	Postman collection (app.findymail.com/docs/collection.json), OpenAPI 3.0.3 spec

Strengths and limits

Where it fits

High-value contacts where a contractual <5% bounce guarantee matters
Finding and verifying emails in one step, including catch-all domains
Name+company or profile-URL email lookups at high concurrency (300 simultaneous)
Natural-language lead lists via Intellimatch
Agents via the official hosted MCP (mcp.findymail.com)

Where it falls short

Cheapest cost per email at very high volume
EU phone numbers (phone finder returns nothing for EU citizens)
Reselling or embedding data on usage-based plans (credit-based plans are required for that)
Pay-as-you-go: there is no PAYG option on any plan

Worth knowing

Two pricing systems: usage-based plans ($99/$399/$999) publish no numeric limits ('generous', 5x, 20x) and are for your own team only; reselling or embedding needs the credit-based plans, which sit behind a tab on the same pricing page.
Usage-based plans cap API concurrency at 25/50/150 simultaneous requests regardless of the endpoint's own 300 limit.
Verifier credits are charged per verification whatever the result; finder credits only on success. Finder and verifier balances cannot be converted into each other.
Rollover capped at 2x plan allowance; credits reset to 0 at the end of the billing period after cancellation; downgrading an annual plan cuts the balance immediately.
No pay-as-you-go option on any plan.

4 moreShow fewer

Phone finder never returns numbers for EU citizens; 10 credits per hit.
/api/search/domain is deprecated (10 concurrent, async up to 24 h); use /api/search/employees, which returns no emails.
Duplicate finds within 30 days are not re-charged, but re-exporting the same lead in a different list can be.
Findymail advises against re-verifying its emails elsewhere, since other verifiers flag its catch-all results as risky; the <5% bounce guarantee is a credit refund, not cash.

Our take

In a 10-contact live test for a remote-staffing client, Findymail found all 10 work emails where AI Ark found 9, including one deliverable address AI Ark missed, and it charged exactly 1 credit per email found. We kept AI Ark as the primary source on cost and use Findymail as the fallback for its misses and for high-value contacts. Findymail is also in the North America phone chain of an enrichment service we built for a B2B data company.

Who should use it

Use Findymail for: High-value contacts where a contractual <5% bounce guarantee matters
Look elsewhere for: Cheapest cost per email at very high volume

If Findymail is not the answer

Other Enrichment tools in this directory, each with its own review.

BetterContact

Enrichment

From $15/mo

Best for one-bill access to 20+ email/phone providers without holding their keys.

BetterContact API review

BuiltWith

Enrichment

From $245.83/moOfficial MCP

Best for front-end / web technographics per domain with first/last detected dates.

BuiltWith API review

Clearbit

Enrichment

Best for existing Clearbit API customers maintaining legacy integrations.

Clearbit API review

Before you build

Four things to settle first, each read off Findymail's own pages.

Confirm the API is on your planAPI access starts on the Basic (credit-based) plan. Free tier: Free account, no credit card: 10 finder credits and 10 email verifications, one-time (pricing page schema.org offer 'Free Trial'.
Keep the key out of your codeAPI key. It is sent as: header Authorization: Bearer <token>.
Design around the rate limitConcurrency-based, not per-minute: each endpoint caps simultaneous in-flight requests (300 for name search, verify, phone, reverse email, company, technologies; 50 for business-profile, employees, Intellimatch, lookalike, exclusion lists; 10 for deprecated domain search; technology catalog search 10 req/min).
Know the catch before you scaleTwo pricing systems: usage-based plans ($99/$399/$999) publish no numeric limits ('generous', 5x, 20x) and are for your own team only; reselling or embedding needs the credit-based plans, which sit behind a tab on the same pricing page.

Want us to build it for you?

Tell us what you want Findymail to do in your stack. We will show you how we would wire it into your data, outbound or CRM, and what we would check first.

Book a call

See case studies

Read from findymail.com/pricing and app.findymail.com/docs. Verified 25 Oct 2026.

All 20 endpointsFor developers: method, path, what it does and what it costs.

Base URL: app.findymail.com

Bulk and async: No dedicated bulk REST endpoint; async per-call via webhook_url, Intellimatch export tasks, and CSV bulk finder in the web app.

Webhooks: Yes: optional webhook_url on finder endpoints (search/name, business-profile, domain) runs the search in the background and POSTs the result; signal monitors can deliver to a webhook_url.

Filter endpoints

20 endpoints

Method	Path	What it does	Cost
POST	`/api/search/name`	Find a verified work email from name + company	1 finder credit when found; free when not found
POST	`/api/search/business-profile`	Find email from a business (LinkedIn-style) profile URL	1 finder credit when found; free when not found
POSTasync	`/api/search/domain`	DEPRECATED: find a contact with a role at a domain (async jobs can take up to 24 h)	1 finder credit when found; free when not found
POST	`/api/verify`	Verify an email	1 verifier credit per verification, whatever the result
POST	`/api/search/phone`	Find a phone number from a business profile URL (no results for EU citizens)	10 finder credits when found; free when not found
POST	`/api/search/reverse-email`	Reverse lookup: business profile from a work or personal email	1 finder credit when found, +1 with with_profile; free when not found
POST	`/api/search/company`	Company data from profile URL, name or domain	1 finder credit when found; free when not found
POST	`/api/search/employees`	Find employees by company website + job title (no emails)	1 finder credit per employee returned; free when none
POSTasync	`/api/intellimatch/search`	Intellimatch natural-language lead search task (returns hash to poll)	Charged on export: companies 1 credit per 10 (broad) or 1 per company (targeted); +1 per contact, +1 per email, +10 per phone
GET	`/api/intellimatch/status`	Poll Intellimatch task status	Free
GET	`/api/intellimatch/data`	Paginated results of a completed Intellimatch task	Free (charged by the search)
GET/POST/PUT/DELETE	`/api/intellimatch/exclusion-lists, /api/intellimatch/exclusion-lists/{excludedDomainList_id}, /api/intellimatch/domains`	Manage domain exclusion lists for Intellimatch (batches over 50 domains queued)	Free (no credit cost stated)
POST	`/api/lookalike/search`	Companies similar to a seed domain	1 finder credit per 10 companies returned, rounded up; free when none
POST	`/api/technologies`	Technology stack for a domain	1 finder credit when at least one technology returned; free otherwise
GET	`/api/technologies/search`	Search the technology catalog by name (max 25)	Free
GET/POST/PATCH/DELETE	`/api/signals/monitors, /api/signals/monitors/{id}`	Create and manage intent-signal monitors (hiring, funding, job change, keyword mention, post engagement), optional webhook_url delivery	Creating a monitor is free; each delivered signal 1 finder credit, +1 for company filters, +1 for contact filters on keyword/post monitors; enrichment 1 per email, 10 per phone
GET	`/api/signals, /api/signals/{id}`	List or read delivered signals	Not stated
GET/POST/PUT/DELETE	`/api/lists, /api/lists/{id}, /api/contacts/get/{id}`	Contact lists and saved contacts	Not stated
GET	`/api/credits`	Remaining credit balance (team-level); has_capacity on usage-based plans	Not stated
GET	`/api/credits/report/summary, /api/credits/report/team-summary`	Daily/monthly usage; team usage (owner only)	Not stated