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

# Twilio

> SMS and phone call infrastructure

<Warning>
  Twilio-based capabilities are currently hidden. Contact [support@abundly.ai](mailto:support@abundly.ai) to enable them for your account.
</Warning>

Twilio powers SMS and phone call capabilities for your agent. For phone calls, the Abundly platform uses Twilio together with the [OpenAI Realtime API](/integrations/openai#realtime-voice-api) to handle natural voice conversations.

## How to enable

Go to **Settings → Capabilities** and enable the capabilities you need:

* **Send SMS** — Send text messages
* **Receive SMS** — Respond to incoming texts
* **Make Phone Call** — Initiate outbound calls
* **Receive Phone Call** — Answer incoming calls

See [Multi-channel communication](/features/communication) for an overview of agent communication channels, [Email & SMS](/features/messaging) for messaging details, and [Voice communication](/features/voice) for voice interactions.

## Example use cases

* **Appointment Reminders** — "Send a text reminder to all attendees 24 hours before their appointment"
* **SMS Triage** — "When you receive an SMS, analyze the request and respond or escalate as needed"
* **Outbound Calls** — "Call this lead and schedule a demo"
* **Inbound Support** — "When called about a technical issue, interview the user to learn about the problem, and then say that we will get back to them shortly. Then send an email summary to me and add a ticket to the support backlog in Notion."

<Note>
  You can configure a whitelist of allowed phone numbers and require approval before sending messages or making calls.
</Note>