Datacircle

1Lookup, POST /b2b-contact-append: 9 email finder API plans

50% complete: 5 of the 10 key fieldsSee which
nothing charged when not found

$371.25per 1,000 emailsThe median plan costs $19.90 per 1,000. This plan costs less than 1% of the 1,182 priced plans.
Plan: Starter one of 1Lookup's 9 plans
Call: POST /b2b-contact-append one of 1Lookup's 5 calls

About this item

  • Freshness. 1Lookup doesn't say how fresh an email is.
  • 5 of the 10 key fields. Confidence, Name, Job title, Company, LinkedIn URL.
  • A monthly subscription. You pay $99 for 20,000 credits, enough for about 266 calls. Unused credits roll over for up to 3 months.
  • One call. You call POST /b2b-contact-append. Every input is optional: email, linkedin_url, name, company_domain, person_id. The call returns the email.
  • Who can get it: anyone with a business name and a working business email address. Keep data: with conditions. Use data: with conditions.

Compare with similar plans

Other providers' plans with the closest prices per 1,000.

This plan1Lookup, $99 monthly, Starter, POST /b2b-contact-appendPearch AI, $600 pack, Standard pack, POST /v1/profile/batchUpLead, $1,788 yearlyNymeria, $39 monthlyZeroBounce, $39 pack
$ per 1,000$371.25$360.00$372.50$390.00$390.00
Completeness50%50%60%50%20%
Billingmonthlypay firstyearlymonthlypay first
Pay$99$600$1,788$39$39
Enough forabout 266 calls a monthabout 1,666 results4,800 calls a year100 calls a month100 calls
Freshnessnot publishednot publishedlivestoredlive
Who can get itanyone with a business name and a working business email addressanyoneanyone 18 or overanyone 18 or over, on request through its Contact Us formanyone, for their internal business purposes only, not a resident of a country the US OFAC sanctions or on its restricted lists

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-20.

  1. 1lookup.io/docs
  2. 1lookup.io/llms.txt
  3. 1lookup.io/openapi.json
  4. 1lookup.io/pricing
  5. 1lookup.io/products/email-enrichment
  6. 1lookup.io/products/hlr-lookup
  7. 1lookup.io/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
  • Catch-all domain, not in the answer
  • Where found, not in the answer
  • Personal email, not in the answer
  • Name
  • Job title
  • Company
  • LinkedIn URL
  • Location, not in the answer
Price
$ per 1,000$371.25
Billingmonthly
$ a month$99
Strengths
Strengthsnothing charged when not found
Aggregators
Aggregatorsnone
Charges
Repeat free7 days
Percall
Not found
$ per 1,000$0.00
In their words
Their pitchVerified work email, title and seniority from a name plus company, an email, or a LinkedIn URL.
Data
Keep datayour subscription term: Output Data may not be retained after the subscription terminates, except as required by law
Use datawe grant you a limited, non-exclusive, non-transferable, non-sublicensable, revocable license to access and use the Service, and to use Output Data, for your internal business purposes during your subscription term, You must not, and must not permit any third party to: Resell, sublicense, rent, lease, distribute, or otherwise make the Service or Output Data available to any third party, except as expressly permitted in writing by us, Build, populate, enrich, or maintain a competing or substitute database, list, or product from Output Data, or use Output Data to train any machine learning or artificial intelligence model, Copy, scrape, cache, or store Output Data beyond what is reasonably necessary for your internal business use, or retain Output Data after your subscription terminates except as required by law, Reverse engineer, decompile, or disassemble any part of the Service, or attempt to discover its source code, underlying data sources, algorithms, or scoring logic, Circumvent or attempt to circumvent any rate limit, quota, usage limit, authentication, or access control, Remove, obscure, or alter any proprietary notice, or misrepresent the source of Output Data, Use the Service to benchmark against a competing product, or publish performance or accuracy comparisons, without our prior written consent, Access the Service by any automated means other than our documented APIs, or use the Service in a manner that interferes with its integrity, security, or performance [...] You must not use the Service, or Output Data, to: Violate any applicable law, regulation, or third-party right, Send, or enable others to send, unlawful telemarketing, robocalls, spam, or unsolicited or non-consented calls, texts, faxes, or emails, Harass, stalk, threaten, defraud, extort, dox, discriminate against, or harm any person, or facilitate any of the foregoing, Determine any person's eligibility for credit, insurance, employment, housing, government benefits, or any other purpose governed by the Fair Credit Reporting Act, as further described in Section 9, Identify, locate, surveil, or track any individual without a lawful basis, or to skip-trace or investigate any individual in violation of law, Collect, compile, enrich, sell, or license personal data without a lawful basis and required consents, Build, train, or improve a competing product, dataset, list, or machine learning or artificial intelligence model, Resell, redistribute, or provide the Service or Output Data to third parties [...]
Plan
Pay$99
You get20,000 credits a month
Enough forabout 266 calls a month
Expiresunused credits roll over for up to 3 months
Rate limit
Batch1
Speed
Answerin the call
The call
You sendnothing required. Optional: email, linkedin_url, name, company_domain, person_id
MethodPOST
Path/b2b-contact-append
About the plan
PlanStarter
Who can get itanyone with a business name and a working business email address
The 19 fields the plan's answer can hold

success, request ID, request type, processing time, credits used, credits remaining, cache hit, matched, full name, work email, email confidence, title, seniority, company, departments, role history, LinkedIn URL, company domain, current role started