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

# Introduction

> A practical guide to verifying emails and protecting deliverability

## You are here to keep your list clean

You want to catch bad or risky addresses before they reach your ESP, protect sender reputation, and keep signup flows healthy. This guide shows you how to use Bolt Route Email Verification to do that without building a complex pipeline.

## Choose the workflow that fits your job

<CardGroup cols={2}>
  <Card title="Realtime verification" icon="bolt" href="/api-reference/endpoints/realtime-verification" cta="Check one address">
    Decide instantly at signup, form submit, or CRM entry.
  </Card>

  <Card title="Batch verification" icon="list-check" href="/api-reference/endpoints/batch-verification/create-task" cta="Create a task">
    Verify large lists asynchronously and download results.
  </Card>

  <Card title="File upload" icon="file-arrow-up" href="/api-reference/endpoints/file-upload/upload-file" cta="Upload CSV/XLSX">
    Drop a file and let Bolt Route parse and verify it.
  </Card>

  <Card title="API keys" icon="key" href="/api-reference/endpoints/api-keys/create-key" cta="Get a key">
    Create a key and start verifying in minutes.
  </Card>
</CardGroup>

## What success looks like

* Clean signups with realtime checks at the point of capture
* List hygiene through batch tasks or file uploads
* Clear decisions using `valid`, `invalid`, `catchall`, and `unknown`
* Usage visibility so you can manage credits and budgets

## When you need details

* Set up your key in [Authorization](/api-reference/authorization).
* Dive into the [API reference](/api-reference/introduction) for schemas and examples.
* Track volume in [Metrics](/api-reference/endpoints/metrics-controller).