> ## Documentation Index
> Fetch the complete documentation index at: https://deepline.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Cost-Aware Email Waterfall

> Reference for the maintained work-email lookup that starts from a person’s name and company domain.

## Input

Provide `first_name`, `last_name`, and `domain`. `company_name` and
`linkedin_url` are optional context when you have them.

## Result

The maintained Play returns `email`, `email_source`, `email_validated`, and
waterfall-step outcomes. An unresolved email is a valid result.

## Caveat

The current Play can use validation, patterns, and finder actions, but their
order and cost are not fixed by this page. `email_validated` means the final candidate passed the current Play's configured validation gate.
This value does not guarantee delivery.
Read the live Play contract. Test representative rows before you increase the run size.

[Run the canonical Email Waterfall guide](https://deepline.com/docs/plays/email-waterfall.md).


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