> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/tools/

# Free contact data tools

Find work emails, check phone numbers and see how companies format addresses. Every tool shares 10 free lookups per visitor, with no signup.

By Enrich.chat Editorial. Updated October 15, 2026.

## All tools

- [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/): Free tech stack lookup. Enter a company website to see the technologies it uses by category, learn how detection works, and compare BuiltWith alternatives.
- [Phone number validator](https://enrich.chat/tools/phone-number-validator/): Free phone number validator. Check the format, get the E.164 number, and see its country and whether it is mobile, landline or VoIP.
- [LinkedIn email finder](https://enrich.chat/tools/linkedin-email-finder/): Paste a LinkedIn profile URL to find the person's work email and mobile number, each with a status. Free to try, no extension, no LinkedIn login.
- [Lead list builder](https://enrich.chat/tools/lead-list-builder/): Free B2B lead generator. Describe your ideal buyer in plain English, see matching decision makers, then add verified emails and export to your CRM.
- [Email permutator](https://enrich.chat/tools/email-permutator/): Free email permutator: enter a name and company domain to list 18 likely work email addresses, then learn how to verify the right one before you send.
- [Email format finder](https://enrich.chat/tools/email-format-finder/): Free email format finder: enter a company domain to see its most common email pattern, an example address, other formats used, and if it is catch-all.
- [Email finder](https://enrich.chat/tools/email-finder/): Find a work email from a full name and company website. Free, no signup. Each result shows if the mailbox is verified, catch-all or unknown.
- [Catch-all checker](https://enrich.chat/tools/catch-all-checker/): Check if a domain is catch-all (accept-all) for free. See its mail provider and MX records, why verifiers say unknown, and how to send to catch-alls safely.

## How the free tools work

Each tool runs one lookup at a time against the same API that AI agents use. Every visitor gets 10 free lookups a day across all tools, with bot protection so the free tier stays free. When you need more, paste one prompt into ChatGPT, Claude or Cursor and your agent gets 10 free lookups a day, then uses credits only for matches.