Fiber AI pricing and alternatives: reverse email lookup API, POST /v1/email-to-person/single/lite

Fiber AI's site llms.txt Best cached reverse email lookup API in 2026

92% complete: 12 of the 13 key fields we checkSee the 13 fields

$0.00per 1,000 people

Plan: Cardless API trial one of Fiber AI's 9 plans

Call: POST /v1/email-to-person/single/lite one of Fiber AI's 2 calls

API: Reverse email lookup API one of Fiber AI's 9 APIs

About this item

Freshness. Fiber AI doesn't say how fresh a person's profile is.
12 of the 13 key fields we check. Experience, Education, Skills, Headline, About, Location, Photo, Followers, Connections, Certifications, Languages, Open to work.
Nothing to pay. You get 100 credits once, enough for 100 calls. Unused credits expire when the 7 days pass without a card, the trial ends.
One call. You send email to POST /v1/email-to-person/single/lite. The call returns the person who owns the email address.
Who can get it: with conditions. Keep data: with conditions. Use data: with conditions.

Fiber AI: reverse email lookup API alternatives

We list other providers' plans closest to this plan in price per 1,000 people.

	This planFiber AI, free, Cardless API trial, POST /v1/email-to-person/single/lite	BetterEnrich, free	FullEnrich, free	Findymail, free	Icypeas, free, 50 Free Data Enrichment Credits, POST /reverse-email-lookups
$ per 1,000	$0.00	$0.00	$0.00	$0.00	$0.00
Completeness	92%	15%	62%	54%	0%
Billing	free	free	free	free	free
Pay	$0	$0	$0	$0	$0
Enough for	100 calls, once	not published	50 results, once	not published	5 results, once
Freshness	not published	live	live	not published	not published
Who can get it	anyone with a work email, one trial per company domain, to use only in the United States	anyone, for lawful business purposes only	companies, on a first account only, not a covered person or a resident of a country of concern under the US DOJ rule	anyone 18 or over	business use only (strictly B2B), over the age of 13

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-23.

Product details

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

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

Price
$ per 1,000	$0.00
Billing	free

Aggregators
Aggregators	none

Charges
Per	call
Also pays for	Export audience companies to CSV · Export audience prospects to CSV · from the same budget: Work email reveal · Personal email reveal · Phone number reveal · Live company fetch · Live fetch (batch start) · Company search result · People search result · Job posting search · Company count · People count · Job posting count · Agentic / natural-language search · Google Maps / local business · Investor search · Combined search · Audience build · Audience enrichment · Tracker entity check · Full reverse email lookup · Lite reverse email lookup · Kitchen Sink resolution · Hashed email lookup · Hotel search page · Hotel property lookup

Not found
$ per 1,000	$0.00

In their words
Their pitch	Given an email address, find the person's LinkedIn profile. Lite version optimized for high-volume usage at lower cost. Skips expensive yield increasing operations.

Data
Keep data	a limited, non-exclusive, non-transferable, non-sublicensable right to (A) view and store the Prospect Data [...] Prospect Data and Usage Data are Confidential Information of Fiber AI. [...] After any expiration or termination of these Terms, or at any time upon request from Fiber AI, Customer will immediately return or destroy (at Fiber AI's sole direction) all materials or media containing any Confidential Information
Use data	solely for purposes of conducting business-to-business sales, marketing, or business development activities and for Customer's other internal business purposes (the "Permitted Uses"). Customer may not resell, transfer, assign, or sublicense Customer's rights under these Terms to any third party or use the Services to run an outsourcing business or provide services for the benefit of any third party. [...] Customer (A) will not, and will ensure that Customer Personnel do not, incorporate any Prospect Data into Customer's products or services or otherwise resell, sublicense, or distribute any Prospect Data, (B) will not [...] present the Prospect Data so that it appears to be made available by any third party, (C) will process all Prospect Data in accordance with Laws, including Privacy and Data Laws [...] (F) not use the Services, including Prospect Data, to determine a consumer’s eligibility for (i) credit or insurance for personal, family or household purposes, (ii) employment or (iii) a government license or benefit or (iv) any other purpose governed by the Fair Credit Reporting Act [...] Customer will not [...] (h) develop any scripts or software applications that interact with or integrate with the Services unless first authorized in writing by Fiber AI [...] The Services are currently authorized to be used only in the United States to facilitate business-to-business sales, marketing, or business development communications with individuals in the United States

Plan
Pay	$0
You get	100 credits
Enough for	100 calls, once
Expires	when the 7 days pass without a card, the trial ends

Rate limit
Per second	50
Batch	1

Speed
Answer	in the call

The call
You send	email
Method	POST
Path	/v1/email-to-person/single/lite

About the plan
Plan	Cardless API trial
Who can get it	anyone with a work email, one trial per company domain, to use only in the United States

The 137 fields the plan's answer can hold

name, first name, last name, headline, about, profile picture, profile URL, username, member ID, profile ID, birth date, connections, followers, industry, interests, skills, tags, career start date, updated at, open to work, premium, influencer, hiring, verified, verifications, account created, top voice, personal website, location, street address, neighborhood, city, region, region code, county, postal code, country code, country, location coordinates, time zone, current title, current company, current company ID, current job location, current job description, current seniority, current job function, current employment type, start date, jobs, job title, job company, job company ID, job is current, job location, job start date, job end date, job description, job seniority, job function, job employment type, job academic qualification, job company start date, job company end date, job company URL, job company logo, tenures, schools, school ID, school name, school field of study, school field of study ID, school degree, school grade, school start date, school end date, school activities, school description, school URL, languages, language proficiency, certifications, certification name, certification credential ID, certification URL, certification description, certification issuer, certification issuer ID, certification issue date, courses, course name, course number, course associated with, patents, patent ID, patent name, patent country, patent number, patent description, patent URL, patent date, projects, project ID, project name, project URL, project description, project is current, project start date, project end date, publications, publication ID, publication name, publication publisher, publication description, publication date, publication URL, publication authors, publication author name, publication author URL, volunteering, volunteering title, volunteering is current, volunteering cause, volunteering description, volunteering company, volunteering company ID, volunteering start date, volunteering end date, organizations, organization name, organization position, organization start date, organization end date, articles, article ID, article title, article date published