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

# Zapier Email Automation

> Connect Lettr to Zapier to automate email sending across 8,000+ apps, send custom HTML messages or saved templates with no code required.

The [Lettr Zapier integration](https://zapier.com/apps/lettr/integrations) lets you automate email sending by connecting Lettr to 8,000+ apps — no code required.

## Prerequisites

Before you begin, make sure you have:

<CardGroup cols={2}>
  <Card title="API Key" icon="key" href="https://app.lettr.com/api-keys">
    Create an API key in the Lettr dashboard
  </Card>

  <Card title="Verified Domain" icon="globe" href="/learn/domains/sending-domains">
    Add and verify your sending domain
  </Card>
</CardGroup>

You'll also need:

* A [Zapier](https://zapier.com) account (free tier available)
* A sender address on your verified domain (e.g. `notifications@yourdomain.com`)

## Available Actions

<CardGroup cols={2}>
  <Card title="Send Email" icon="envelope">
    Send an email with custom HTML content, subject, sender, and reply-to address.
  </Card>

  <Card title="Send Email Template" icon="file-lines">
    Send an email using a template saved in your Lettr account.
  </Card>
</CardGroup>

## Connect Lettr to Zapier

<Steps>
  <Step title="Create a Zap">
    Go to [Zapier](https://zapier.com/apps/lettr/integrations) and create a new Zap.
  </Step>

  <Step title="Choose a Trigger">
    Select your trigger app — the event that starts the workflow. For example, a new row in Google Sheets, a form submission in Typeform, or a payment in Stripe.
  </Step>

  <Step title="Add Lettr as the Action">
    Search for **Lettr** and choose one of the available actions:

    * **Send Email** — compose an email with custom HTML content
    * **Send Email Template** — use a template from your Lettr account
  </Step>

  <Step title="Connect Your Lettr Account">
    Authenticate with your Lettr API key when prompted.

    <Warning>
      Use an API key with sending permissions. Never share your API key publicly. See [API Key Permissions](/learn/api-keys/permissions) for details.
    </Warning>
  </Step>

  <Step title="Map Fields">
    Map fields from your trigger to the Lettr action:

    * **From** (required) — sender address on your verified domain
    * **Recipient** (required) — the recipient email address
    * **Subject** (required) — email subject line
    * **HTML content** (required for Send Email) — the email body
    * **Reply to** (optional) — reply-to address
  </Step>

  <Step title="Test and Publish">
    Test the Zap to verify emails are sent correctly, then turn it on.
  </Step>
</Steps>

## Example Use Cases

| Trigger                 | Action              | Use Case                                      |
| ----------------------- | ------------------- | --------------------------------------------- |
| New Typeform submission | Send Email Template | Send a confirmation email to form respondents |
| New Stripe payment      | Send Email          | Send a custom payment receipt                 |
| New Google Sheets row   | Send Email Template | Send onboarding emails to imported contacts   |
| New Calendly event      | Send Email          | Send meeting confirmation with details        |

<Tip>
  Use **Send Email Template** when you want to maintain consistent branding. Create templates in the [Lettr dashboard](https://app.lettr.com/templates) and reference them in your Zaps.
</Tip>

## Other Integrations

<CardGroup cols={2}>
  <Card title="Stripe" icon="stripe" href="/integrations/stripe">
    Send emails directly from Stripe
  </Card>

  <Card title="Supabase" icon="bolt" href="/integrations/supabase">
    Auth emails and Edge Functions
  </Card>

  <Card title="WordPress" icon="wordpress" href="/integrations/wordpress">
    Replace wp\_mail with Lettr
  </Card>
</CardGroup>

## What's Next

<CardGroup cols={2}>
  <Card title="Templates" icon="paintbrush" href="/learn/templates/introduction">
    Create reusable email templates
  </Card>

  <Card title="API Reference" icon="code" href="/api-reference/emails/send-email">
    Send emails programmatically via the API
  </Card>
</CardGroup>