Overview
Reverse Email Lookup transforms any email address into a complete person and company profile — available directly in the FullEnrich app, or via the API.
It allows you to input an email address and retrieve the B2B profile behind it, including both personal and company-level information.
Reverse Email Lookup works with both professional and personal email addresses (Gmail, Outlook, GitHub, and more).
What you get
Person data
First name
Last name
Job title
Seniority
Department
Location
Professional social profile
Company data
Company name
Company domain
Company size
Industry
Headquarters location
Headcount
Company social profile
How it Works
Input
An email address (personal or professional)
Output
Person data (first name, last name, location)
Professional data (job title, seniority, department, associated company/companies)
Firmographic data (company name, company domain, company size, industry, headquarters location, headcount)
Credit Cost
1 credit is consumed per successful Reverse Email Lookup
No credits are consumed if no results are found
Credit cost is the same regardless of how many fields are returned
Using the UI
Go to Reverse Email Lookup in the top navigation
Click + New Lookup
Enter the email address you want to look up
View the full contact and company profile once it's found
Your past lookups are saved under My Lookups, or you can browse your team's lookups under All Lookups.
Using the API
The API process is asynchronous and happens in two steps.
1. Start the lookup
Make a POST request to initiate the enrichment:
POST https://app.fullenrich.com/api/v1/contact/reverse/email/bulk
Include your
Authorizationheader with a Bearer tokenAdd the email address in the
datafield(Optional) Provide a webhook URL to receive notifications
The response will return a reverse_email_id.
Processing typically takes 5–10 seconds.
2. Retrieve the results
Use the returned ID to fetch the enrichment results:
GET https://app.fullenrich.com/api/v1/contact/reverse/email/bulk/{reverse_email_id}When the status is FINISHED, the lookup is complete and results are available.
Key Details
Cost: 1 credit per successful match
Match rate: Varies depending on region and email type
Processing time: 5–10 seconds on average (API); near-instant in the UI
Data: Emails are run through a waterfall of 10+ data providers and contact databases
Important Notes
Reverse lookup from a phone number to an identity is not supported
Data availability depends on region, email type, and source coverage
Learn More
For detailed implementation guidance, refer to the API documentation:
Reverse Email Lookup API Documentation
Next Steps
After identifying a contact using Reverse Email Lookup, you can enrich that contact to retrieve additional details such as emails or phone numbers.
Follow the step-by-step enrichment guide here:
How to Enrich Contacts in FullEnrich (Step-by-Step Guide)