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Industry · B2B SaaS

Reverse email lookup API for B2B SaaS

Know who is behind the email.

What B2B SaaS teams need from reverse email lookup, what Forager returns, and how teams like yours test it.

4 recipes use reverse email lookup for B2B SaaS teams.

  • $5 free credits
  • 800M+ people
  • 65M+ companies

A selection of teams in B2B SaaS using Forager for reverse email lookup · plus other teams in B2B SaaS

  • Clay
  • Juicebox
  • Nooks
  • Deepline
  • Scalestack
  • HubSpot
  • Freckle
  • Sumsub
For B2B SaaS teams
The job
Identify the person, employer and work email behind a gmail or outlook sign-up or form fill so it can be scored and routed.
When
A free trial sign-up or form fill arrives with a personal email address.
Outcome
Inbound teams act on sign-ups that would otherwise stay anonymous and route personal-email form fills to the right owner.
Lead recipe 1

Convert personal-email sign-ups into work identities

When to use it: A free trial sign-up or form fill arrives with a personal email address.

  1. Send the personal email to POST /person_detail_reverse_lookup/by_email/
  2. Read current role_title and organization from the returned profile
  3. Enrich the employer with POST /organization_search/ (domains) for employees, industry, funding
  4. Get the work email from /person_contacts_lookup/work_emails/
  5. Upsert to CRM and route by the platform's scoring rules
InputsOutputs
personal email (gmail/outlook/yahoo)person name
public profile identifier
role_title
organization domain
employees
work_email
Lead recipe 2

Qualify PLG sign-ups and route enterprise accounts to sales

When to use it: A user activates a free workspace or crosses a usage threshold.

Show the steps
  1. Resolve the sign-up with POST /person_detail_reverse_lookup/by_email/ when the address is personal; otherwise use the work domain
  2. Score the employer with POST /organization_search/ (employees_start, industries, funding_types)
  3. For accounts above threshold, find decision makers with POST /person_role_search/ (organization_domains, role_title)
  4. Add work emails and create a routed task for the BDR with the user's product activity
InputsOutputs
sign-up emailfit score
product usage eventsorganization employees/industry
decision-maker contacts
work_email
Open the recipe: Qualify PLG sign-ups and route enterprise accounts to sales
Lead recipe 3

Enrich and route inbound demo requests in real time

When to use it: A demo request or contact-us form is submitted with only name and email.

Show the steps
  1. Resolve the submitted email with POST /person_detail_reverse_lookup/by_email/
  2. Enrich the company with POST /organization_search/ (domains) and apply routing rules
  3. Add a direct mobile from POST /person_contacts_lookup/phone_numbers/
  4. Create the lead in CRM and alert the owning rep with a click-to-call link
InputsOutputs
form emailrole_title
nameorganization employees/industry
company field (optional)phone_number
routed owner
Open the recipe: Enrich and route inbound demo requests in real time
Fields

Fields you get back

  • person name
  • public profile identifier
  • role_title
  • organization domain
  • employees
  • work_email
  • fit score
  • organization employees/industry
  • decision-maker contacts
  • phone_number
  • routed owner

From the workflows above. Full field reference: Reverse email lookup and the Reverse email lookup API reference.

Who owns this

Who evaluates reverse email lookup at B2B SaaS teams, and what they are judged on

  • Product manager who owns the enrichment feature: judged on what users see when they open a record
  • Engineering lead integrating the API: judged on response time and errors they can route on
  • Partnerships or data lead managing vendors: judged on cost per valid result

A selection of teams in B2B SaaS using Forager for reverse email lookup · plus other teams in B2B SaaS

  • Clay
    • GTM workflow builders

    Selected use case: Forager mobile numbers, emails and people data inside Clay tables.

  • Juicebox
    • AI candidate sourcing

    Selected use case: Forager data behind its PeopleGPT search and sourcing agents.

  • Nooks
    • Power & parallel dialers

    Selected use case: mobile numbers inside their dialer.

  • Deepline
    • Waterfall enrichment

    Selected use case: Forager lookups as typed tools inside enrichment waterfalls.

    19 typed Forager tools available inside Deepline1

  • Scalestack
    • GTM workflow builders

    Context and data infrastructure for enterprise GTM agents.

  • HubSpot
    • CRM add-ons

    Selected use case: enriching contact and company records with people, company and job-posting data.

  • Freckle
    • GTM workflow builders

    Selected use case: Forager as a selectable mobile number provider in its waterfalls.

  • Sumsub
    • Embedded in a platform

    Identity verification platform for KYC, AML and fraud prevention.

Sources

1 Deepline: deepline.com/integrations/forager (public page, read 2026-10-21).

“Forager leads in accuracy across all regions, Forager's dual strength in accuracy and volume makes it a powerhouse for sales teams that are targeting businesses around the globe.”
ClayStefan K.Data Partnerships
800M+people
65M+companies
How to test it

Test reverse email lookup on your own sample

  1. Pull a sample. Take profiles your users looked up last week.
  2. Run it. Use a self-serve key, or book a demo and send us the list.
  3. Measure what your users feel. Connect rate for mobiles, bounces for emails, and whether the right person answers.
  • $5 free credits
  • No credit card
  • Run your sample
FAQ

Frequently asked questions

How do B2B SaaS companies use Forager reverse email lookup?

Identify the person, employer and work email behind a gmail or outlook sign-up or form fill so it can be scored and routed. Turn an email address into a full person profile: name, title, company, location and social links. This page walks through 3 workflows with the exact steps.

What does reverse email lookup cost for B2B SaaS companies?

Reverse email lookup: 5 credits per request, charged whether or not data comes back. 1,000 reverse email lookups use 5,000 credits: about $67 of Starter credits month to month, or about $50 on Pro with yearly billing. Self-serve plans are Starter, Growth, Pro and Scale. See plans and prices

Which B2B SaaS workflows use reverse email lookup?

Convert personal-email sign-ups into work identities, qualify PLG sign-ups and route enterprise accounts to sales and enrich and route inbound demo requests in real time. Each is on this page with its trigger, steps and outcome.

How do I convert gmail signups to work email?

Send the personal email to POST /person_detail_reverse_lookup/by_email/. Get the work email from /person_contacts_lookup/work_emails/.

What inputs does it take and what does it return?

You send sign-up email, company field (optional) and form email. You get back role_title, organization employees/industry, work_email and company size, from POST /person_detail_reverse_lookup/by_email/, as JSON.

Am I charged when nothing is found?

Yes. Reverse email lookup is charged per request, whether or not data comes back. Only mobile and email lookups are free when nothing is found, so try your inputs on a small run before you scale.

Can B2B SaaS companies test reverse email lookup for free?

Yes. Create a free account at app.forager.ai: it comes with $5 in free credits and an API key, and there is no credit card to sign up. Run it on records you already know, or book a demo and send us a list: we run it and show you what we find.

How do I route plg signups to sales by company size?

Resolve the sign-up with POST /person_detail_reverse_lookup/by_email/ when the address is personal; otherwise use the work domain. Score the employer with POST /organization_search/ (employees_start, industries, funding_types).

How accurate is Forager data?

The test that counts is your own: send a list of profiles you care about. We run it and show you what we find, number by number, so you can measure hit rate and connect rate yourself.

What is the difference between a reverse email lookup and an email finder?

An email finder starts from a person and returns their email. A reverse email lookup starts from an email address, such as a sign-up or an inbound lead, and returns the person behind it: name, title, company, location and social links.

Where can I use Forager reverse email lookup?

Native in Clay, partner-built in Deepline and called through the API from Make, n8n and your own code. Everything else connects through the REST API with one API key.

Do I need a subscription?

Not to test: a free account comes with $5 in credits. To keep using reverse email lookup, choose a monthly or yearly plan. Monthly plans cancel anytime and unused credits roll over; yearly plans grant all credits upfront and cost 10% less. Larger volumes are agreed with our team.

Other industries using reverse email lookup

Start building

Put people, company and job data your users can act on inside your product

Send us a list. We run it, show you what we find, then talk volume and terms.

  • $5 free credits
  • No credit card
  • Run your sample
Platforms and teams that build on Forager
  • Clay
  • Juicebox
  • Nooks
  • Andela
  • HubSpot
  • SeekOut