Datacircle

Sixtyfour pricing and alternatives: reverse email lookup API

Sixtyfour's sitellms.txtBest reverse email lookup API in 2026

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

31% complete: 4 of the 13 key fields we checkSee the 13 fields
$0.00per 1,000 peopleWe rank 297 plans by price. Village's $1 monthly plan costs the least per 1,000 people: as little as $0.0000039. Village's $1 monthly plan covers up to 259,200,000 people a month at no extra cost.Village's $25 pack (Reverse Lookup by Email, cached only) covers any number of people. Village's $25 pack costs more to start than Village's $1 monthly plan.Village, BlitzAPI and treg are the best reverse email lookup API providers in our benchmark.
Plan: Free one of Sixtyfour's 3 plans
Call: POST /reverse-email Sixtyfour's only call for this API
API: Reverse email lookup API one of Sixtyfour's 11 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 4 of the 13 key fields we check. Experience, Headline, About, Location.
  • Nothing to pay. You get 64 credits a month, enough for 128 calls. Calls stop once your credits run out. Unused credits expire: does not roll over.
  • One call. You send lead to POST /reverse-email. The call returns the person who owns the email address.
  • Who can get it: anyone aged 18 or over. Keep data: no limit. Use data: with conditions.

Sixtyfour: reverse email lookup API alternatives

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

This planSixtyfour, freeVillage, free, POST /v2/people/enrich/by-email, Reverse Lookup by EmailBlitzAPI, freetreg, freeDeBounce, freeExellius Systems Inc, free
$ per 1,000 people$0.00$0.00$0.00$0.00$0.00$0.00
Completeness31%31%69%0%8%15%
Billingfreefreefreefreefreefree
Pay$0$0$0$0$0$0
Enough for128 calls a month50 calls a month1,000 calls a monthabout 49 calls, onceabout 4 calls, oncenot published
Freshnessunknownstoredstoredunknownlivestored
Who can get itanyone aged 18 or overanyoneprofessional B2B clients with a professional email address, not BlitzAPI's competitorsa new account once its email is verified, for one team (aliases of one inbox share one), 16 or overanyone over 18anyone 18 or over

Every reverse email lookup API provider we score, ranked

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-27.

  1. docs.sixtyfour.ai/api-reference/endpoint/reverse-email
  2. docs.sixtyfour.ai/api-reference/errors
  3. docs.sixtyfour.ai/get-api-key
  4. docs.sixtyfour.ai/guides/credits-and-pricing.md
  5. docs.sixtyfour.ai/introduction
  6. sixtyfour.ai/legal/terms-of-service

Product details

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

  • Experiencecurrent job
  • Education, not in the answer
  • Skills, not in the answer
  • Headline
  • About
  • 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
Percall
Billingfree
Aggregators
Aggregatorsnone
Charges
Also pays forfrom the same budget: Company Intelligence · People Intelligence · Deep Investigations · Bulk Intelligence · Find Email · Verify Email · Find Phone · Reverse Phone · QA Agent · Age Verification · Deep Search · Lookalike Search · Filter Search · Search Export · Enrich LinkedIn Profile
Overage
Units caphard
Not found
$ per 1,000$0.00
In their words
Their pitchSend an email address and get back the person behind it: name, title, employer and LinkedIn profile. Use it to enrich inbound signups or deduplicate CRM records.
Data
Keep datano limit
Use data"The Content and Marks are provided in or through the Services \"AS IS\" for your internal business purpose only." "[...] no part of the Services and no Content or Marks may be copied, reproduced, aggregated, republished, uploaded, posted, publicly displayed, encoded, translated, transmitted, distributed, sold, licensed, or otherwise exploited for any commercial purpose whatsoever, without our express prior written permission." "You may not access or use the Services for any purpose other than that for which we make the Services available. The Services may not be used in connection with any commercial endeavors except those that are specifically endorsed or approved by us." "As a user of the Services, you agree not to: Systematically retrieve data or other content from the Services to create or compile, directly or indirectly, a collection, compilation, database, or directory without written permission from us. [...] Use any information obtained from the Services in order to harass, abuse, or harm another person. [...] Use the Services in a manner inconsistent with any applicable laws or regulations. [...] Engage in any automated use of the system, such as using scripts to send comments or messages, or using any data mining, robots, or similar data gathering and extraction tools. [...] Interfere with, disrupt, or create an undue burden on the Services or the networks or services connected to the Services. [...] Except as may be the result of standard search engine or Internet browser usage, use, launch, develop, or distribute any automated system, including without limitation, any spider, robot, cheat utility, scraper, or offline reader that accesses the Services, or use or launch any unauthorized script or other software. [...] Use the Services as part of any effort to compete with us or otherwise use the Services and/or the Content for any revenue-generating endeavor or commercial enterprise. Use the Services to advertise or offer to sell goods and services. Sell or otherwise transfer your profile."
Plan
Pay$0
You get64 credits a month
Enough for128 calls a month
Expiresdoes not roll over
Rate limit
Batch1
Speed
Answerin the call
The call
You sendlead
MethodPOST
Path/reverse-email
About the plan
PlanFree
Who can get itanyone aged 18 or over
The 23 fields the plan's answer can hold

email, first name, last name, title, headline, summary, position description, LinkedIn URL, LinkedIn ID, location, email searched, domain, company name, company domain, company website, company LinkedIn URL, company description, company industry, company headquarters, company headcount, company headcount range, company year founded, credits charged

Best GTM APIs