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

# Zexa Documentation: Omnichannel Business Messaging

> Send SMS, WhatsApp, Telegram, Email, and Slack messages from one platform. Manage campaigns, contacts, and delivery analytics in a single dashboard.

Zexa is an omnichannel messaging platform built for businesses that need to reach their customers across multiple channels — SMS, WhatsApp, Telegram, Email, and Slack — from one unified place. Whether you're sending transactional notifications, running marketing campaigns, or automating customer communications, Zexa gives you the tools and API to do it at scale.

<CardGroup cols={2}>
  <Card title="Quick Start" icon="rocket" href="/quickstart">
    Send your first message in under 5 minutes. Set up your account, get your API key, and start messaging.
  </Card>

  <Card title="API Reference" icon="code" href="/api/overview">
    Explore the full REST API. Authenticate, send messages, manage contacts, and handle webhooks.
  </Card>

  <Card title="Channels" icon="tower-broadcast" href="/channels/sms">
    Learn how to configure and use each messaging channel — SMS, WhatsApp, Telegram, Email, and Slack.
  </Card>

  <Card title="Campaigns" icon="bullhorn" href="/messaging/campaigns">
    Create and launch broadcast campaigns to your contact lists with delivery tracking and analytics.
  </Card>
</CardGroup>

## Get started in 3 steps

<Steps>
  <Step title="Create your account">
    Sign up at [app.zexa.ao](https://app.zexa.ao/signup) with your company NIF or ID, email address, and phone number. Your account is ready to use immediately after registration.
  </Step>

  <Step title="Add credits and pick a channel">
    Top up your credit balance from the **Billing** section. Then activate the messaging channel you want to use — SMS, WhatsApp, Telegram, Email, or Slack.
  </Step>

  <Step title="Send your first message">
    Use the dashboard to send a test message, or call the REST API with your API key to start integrating Zexa into your application.
  </Step>
</Steps>

## Explore by topic

<CardGroup cols={3}>
  <Card title="SMS" icon="message-sms" href="/channels/sms">
    Reach any mobile number globally with reliable SMS delivery.
  </Card>

  <Card title="WhatsApp" icon="whatsapp" href="/channels/whatsapp">
    Send rich messages via the world's most popular messaging app.
  </Card>

  <Card title="Telegram" icon="telegram" href="/channels/telegram">
    Engage users with Telegram bots and broadcast channels.
  </Card>

  <Card title="Email" icon="envelope" href="/channels/email">
    Deliver transactional and marketing emails at scale.
  </Card>

  <Card title="Slack" icon="slack" href="/channels/slack">
    Send notifications and alerts directly to Slack workspaces.
  </Card>

  <Card title="Contacts" icon="address-book" href="/messaging/contacts">
    Import, manage, and segment your audience for targeted messaging.
  </Card>
</CardGroup>

<Note>
  Need help? Contact us at [suporte@zexa.ao](mailto:suporte@zexa.ao) or browse the [FAQ](/help/faq) for quick answers.
</Note>