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

# Introduction

> useSend is open source alternative to Resend, Sendgrid, Mailgun and Postmark etc.

## Setting up

Quicklinks to set up your account and get started

<CardGroup col={2}>
  <Card title="Add domain" icon="globe" href="https://app.usesend.com/domains">
    Add domains to send emails
  </Card>

  <Card title="Create API key" icon="key" href="https://app.usesend.com/dev-settings/api-keys">
    Generate API key to send emails from your app.
  </Card>

  <Card title="Try our API" icon="code" href="/api-reference/introduction">
    Learn how to use our API to send emails programmatically.
  </Card>

  <Card title="NodeJS" icon="node-js" href="/get-started/nodejs">
    Learn how to use our SDK using NodeJS to send emails programmatically.
  </Card>

  <Card title="Python" icon="python" href="/get-started/python">
    Learn how to use our SDK using Python to send emails programmatically.
  </Card>

  <Card title="SMTP support" icon="envelope" href="/get-started/smtp">
    Send emails with SMTP server instead of REST API.
  </Card>
</CardGroup>