Use case, Company email format

Company email format API for your agent. One call per domain.

Send a company domain. Read email pattern such as first.last and share of addresses that use it back. Your agent picks the provider, and you pay per call.

Give this to your agent
set up looot - https://looot.ai/skill.md

The job

What the Company email format API gives your agent

Companies do not pick addresses at random. Most use one pattern, such as first.last@ or flast@, and a second for older accounts. If you know the pattern and a name, you can build the address without paying for a finder.

This lookup is the cheapest in the contact family. One provider returns patterns at no charge, and the other bills a fraction of a cent. The result is a pattern, not an address, so check a built address with a verifier before you send.

You give

a company domain

example.com

You get

  • Email pattern such as first.last
  • Share of addresses that use it
  • Other patterns in use

Sample calls

The request and what comes back

Each run is one POST to /v1/runs with an endpoint id and an input. These are illustrative calls with generic values. The run's result holds the provider's own fields.

Request
{"endpointId":"tomba-email-format","input":{"domain":"example.com"},"wait":30}
ResponseSample output
// POST /v1/runs, then read run.status and run.result
// result: returns the patterns a domain uses, such as first.last@, and is free

The prompt

Copy one prompt, give it to your agent.

Edit the names and numbers, paste it, and the agent runs the job and shows the cost.

  • One run is one domain.
  • 1 steps across 2 providers.
  • Runs on demand, whenever you ask.
Prompt: Company email format API
Use looot to find the email format that example.com uses, such as first.last@, and list any second pattern it also uses. 1. Set up https://looot.ai/skill.md. 2. Search the catalog for each step and check its price before you call. 3. Run the cheapest endpoint that fits. 4. Show the results as a table and the total cost.

Give this to your agent
Setup command
set up looot - https://looot.ai/skill.md

Before you start

Settle these before the first run

  • A pattern is a guess about one person. Build the address from it, then verify it before you send anything.
  • Large companies often run several patterns, one per brand or per acquired firm. Ask for every pattern and test the likeliest first.
  • Small domains have little data. A short list or an empty answer means the provider has seen few addresses there.
  • Store the pattern with the domain. One lookup serves every person at that company, so your agent should keep it and reuse it instead of paying again.

FAQ

Questions people ask

Common patterns are first.last, first, flast and first_last at the company domain. A provider returns the ones it has seen for this domain, so you do not have to guess. Your agent tests the likeliest first.

For agents
use case
Company email format API
run
domain
schedule
on demand
step
Look up the email pattern: tomba thecompaniesapi
setup
https://looot.ai/skill.md
llms.txt
https://looot.ai/llms.txt
updated
2026-10-04
markdown /use-cases/company-email-format.md

Try Company email format with your own agent.

Start your workspace, top up, and paste the prompt into the agent you already use.

Start your workspace See agent recipes