Seamless.AI pricing: reverse email lookup API, POST /search/contacts

Seamless.AI's site llms.txt Reverse email lookup API: 30+ providers compared Seamless.AI: reverse email lookup API alternatives

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15% complete: 2 of the 13 key fields we checkSee the 13 fields

$0.00per 1,000 peopleWe haven't run Seamless.AI through our reverse email lookup API benchmark yet.This plan is free. We rank 396 plans for reverse email lookup APIs by price. Half the plans cost $24.875 per 1,000 people or less.Minerva's $400 monthly plan costs the least per 1,000 people. Minerva's reverse email lookup API costs nothing beyond the plan price.Village's $25 pack (Reverse Lookup by Email, cached only) covers any number of people. Village's $25 pack costs less up front than Minerva's $400 monthly plan.GetProspect, Village and treg are the best reverse email lookup API providers in the Datacircle benchmark.

Plan: Free License one of Seamless.AI's 4 plans

Call: POST /search/contacts one of Seamless.AI's 2 calls for this API

API: Reverse email lookup API one of Seamless.AI's 7 APIs

About this item

Freshness. We don't know how fresh this plan's data is.
2 of the 13 key fields we check. Experience, Location.
Nothing to pay. You get 50 credits once, enough for 50 calls. Calls stop once your credits run out.
One call. You send emailAddress to POST /search/contacts. The call returns the person who owns each email address you send.
Who can get it: anyone 18 or over, for B2B purposes, not a competitor of Seamless.AI. Keep data: with conditions. Use data: with conditions.

Seamless.AI: reverse email lookup API alternatives

Seamless.AI alternatives: every reverse email lookup API provider ranked

We list other providers' plans closest to this plan in price per 1,000 people. We also show the PayPerQ plan. Its price is farther from this plan's price.

	This planSeamless.AI, free license, POST /search/contacts	GetProspect, free, POST /v2/people/bulk-enrich	Village, free, POST /v2/people/enrich/by-email, Reverse Lookup by Email	treg, free	BlitzAPI, free	PayPerQ, pay as you go
$ per 1,000 people	$0.00	$0.00	$0.00	$0.00	$0.00	$0.023
Completeness	15%	15%	31%	0%	69%	0%
Billing	free	free	free	free	free	pay as you go
Pay	$0	$0	$0	$0	$0	per call
Enough for	50 calls, once	50 results a month	50 calls a month	about 50 calls, once	1,000 calls a month	as many as you pay for
Freshness	unknown	stored	stored	unknown	stored	unknown
Who can get it	anyone 18 or over, for B2B purposes, not a competitor of Seamless.AI	anyone 16 or over	anyone	a new account once its email is verified, for one team (aliases of one inbox share one), 16 or over	professional B2B clients with a professional email address, not BlitzAPI's competitors	anyone at least 13 years old or of their country's minimum age (under 18 with a parent's or guardian's consent), not in an embargoed region or a restricted individual, paying each request's Lightning invoice with no account or API key

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-03.

Product details

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

Experience
Education, not in the answer
Skills, not in the answer
Headline, not in the answer
About, not in the answer
Location
Photo, not in the answer
Followers, not in the answer
Connections, not in the answer
Certifications, not in the answer
Languages, not in the answer
Recommendations, not in the answer
Open to work, not in the answer

Price
$ per 1,000 people	$0.00
Per	call
Billing	free

Aggregators
Aggregators	none

Charges
Also pays for	Get Org Contacts: no credits, 60 requests per minute · Get Org Companies: no credits, 60 requests per minute · Look up location filter values: no credits, 60 requests per minute · from the same budget: Search companies · Research contacts · Research companies · Research a single contact

Overage
Units cap	hard

Not found
$ per 1,000	$0.00

In their words
Their pitch	Reverse lookup (v2): pass emailAddress or phoneNumber to find who an email or phone number belongs to.

Data
Keep data	You may not: [...] (iii) Use the API to harvest, aggregate, or cache data not expressly authorized by Seamless. [...] You may not: (i) Store Seamless data longer than necessary to fulfill a legitimate business purpose [...] Upon termination, you must (i) Cease all use of the API, (ii) Delete all Seamless data in your possession, and (iii) Certify such deletion upon request. [...] We may request that you delete the personal information of individuals who have requested that their personal information be deleted. Upon request from Seamless, you agree to take all reasonable and appropriate steps to promptly and securely delete the relevant Seamless Data in your possession, custody or control.
Use data	Seamless grants you a non-exclusive, non-transferable, non-sublicensable, revocable-at-any-time license to access and use the API solely for the purpose of developing, testing, and operating applications (“Developer Applications”) that interact with Seamless’s platform. You may not: (i) Use the API in any manner beyond the scope of this Agreement, (ii) Create an API client that functions as a substitute for Seamless’s core platform or competes with our services [...] You shall not: [...] (v) Use the API to collect sensitive personal information (e.g., SSNs, payment data), (vi) Send spam or unsolicited communications using API-derived data, or (vii) Exceed daily rate limits or create bulk scraping tools. [...] You may not: [...] (ii) Share, sell, or resell any Seamless data to third parties, and/or (iii) Use API data for user profiling, segmentation, or advertising without applicable consent. [...] You agree to access, use, disclose, retain and otherwise process Seamless Data only for the purpose of supporting business-to-business (“B2B”) development opportunities, including for identifying and researching prospective or existing B2B sales, marketing or recruiting opportunities for your business (collectively, the “Permitted Purposes”) and only as otherwise permitted by these Terms. [...] You are strictly forbidden from accessing, using or otherwise processing Seamless Data: For your personal, family or household purposes, or in connection with any non-B2B customers or prospects, In any unlawful, biased, fraudulent or discriminatory manner or for purposes of tracking, profiling or surveilling individuals, To send fraudulent or unlawful communications to individuals or entities, or To sell, rent, license, release, disclose, distribute, disseminate, sublicense, transfer, or otherwise make available, in whole or in part, any Seamless Data to a third party for monetary or other valuable consideration, or otherwise incorporate any portion of Seamless Data into your own or others’ products or services. [...] you will not use any Seamless Data or the Services for any purpose regulated under the Fair Credit Reporting Act (“FCRA”), 15 U.S.C. § 1681b [...] You further agree that you will not: [...] Integrate Seamless Data into any customer relationship management, marketing automation, or sales enablement platform to allow unauthorized users to access or use Seamless Data [...] You may not sell or publicly display or distribute any Seamless Content or otherwise use the Seamless Content in a manner not expressly permitted in these Terms without Seamless’s prior written consent. [...] SEAMLESS'S COMPETITORS ARE PROHIBITED FROM ACCESSING OR USING THE SERVICES IN ANY WAY, EXCEPT WITH SEAMLESS'S PRIOR WRITTEN CONSENT.

Plan
Pay	$0
You get	50 credits
Enough for	50 calls, once

Rate limit
Per second	1

Speed
Answer	in the call

The call
You send	emailAddress. Optional: nextToken, limit, page, savedSearchId, companyName, companyNameSearchType, companyDomain, contactState, contactCountry, contactZipCode, locations, locationRadius, zipCodesRadius, locationType, timezones, timezoneType, department, industry, industrySicCodes, industryNaicsCodes, fullName, contactKeyword, keywordsIsOr, jobTitle, titlesExactMatch, seniority, companyFoundedOn, companySize, companyRevenue, technologies, technologiesIsOr, jobChanges, pastCompany, companyType, lastModifiedAfter, lastModifiedBefore, newsTypes, newsTypeDates, companyLatestFundingDates, companyLatestFundingClassifications, companyLatestFundingTotals, phoneNumber
Method	POST
Path	/search/contacts

About the plan
Plan	Free License
Who can get it	anyone 18 or over, for B2B purposes, not a competitor of Seamless.AI

The 62 fields the plan's answer can hold

search result ID, full name, company name, job title, department, seniority, company domain, city, state, country, company city, company state, company country, LinkedIn URL, company LinkedIn URL, SIC code, NAICS code, industries, started at current company, title started at, time at role, time at company, company founded year, company revenue, company employee range, timezone, first name, middle name, last name, company domain alias, LinkedIn Recruiter URL, LinkedIn Sales Navigator URL, X URL, Google research URL, years at current company, Facebook URL, Google URL, company X URL, company Facebook URL, news title, news URL, news date, news type, company funding total, company latest funding date, company latest funding classifications, job change alert, former company, former title, former started at, former ended at, company type, stock ticker, has more, total results, per page, next token, warning field, warning value, warning message, warning suggestions, success