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Retell AI

A voice-agent platform for handling calls, gathering information and taking connected actions such as appointment intake.

Not tested by JuicyAgents · Reviewed 9 Oct 2026

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Can replace
Twilio IVR, Calendly plus manual phone intake
Integrations
Salesforce, HubSpot, Google Drive, Zendesk, Notion, Zapier
Independent review
Retell AI user reviews (opens in a new tab)

Overview

About Retell AI

Retell AI is designed for teams that want a phone conversation to lead to a useful next step. A voice agent can answer questions, gather caller details and use connected functions during the call. The platform covers building, testing, deployment and monitoring, which matters because a good written prompt alone is not enough for a working telephone service. Common starting points include inbound reception, appointment intake and repeated customer questions.

The buyer is purchasing a configurable voice platform, not a fully prepared receptionist for every business. Call logic, business information, transfers and integrations need setup. It is especially useful when missed calls or repeated questions create a clear operational problem. Evaluate it with realistic callers, background noise, interruptions and unclear requests. Keep a reliable route to a person and make sure the final booking or record is correct, not just that the conversation sounds natural.

What the workflow does

  • Real-time voice conversations: Build phone agents with a chosen voice and model, configured for the business conversation.
  • Connected actions: Use functions and integrations to make the call useful beyond a transcript, such as checking or updating a connected workflow.
  • Call flow configuration: Define instructions and conversation paths for common requests and exceptions.
  • Testing and monitoring: Use platform tools to test agents and inspect their behavior after deployment.
  • Telephony options: Connect calling infrastructure and configure transfer behavior; availability and cost depend on the chosen setup.

From input to result

How the workflow works

You provide

  • Approved answers, opening script and the purpose of each call.
  • Connected booking or business tools with clear function inputs.
  • Transfer destination, fallback instructions and realistic test calls.

You get

  • A caller's request captured with the details needed for follow-up.
  • Supported appointment or intake work completed through connected systems.
  • Call records that help staff review unresolved questions and improve the flow.

  1. Create a narrow call flow and connect the functions needed to complete it.

  2. Test normal calls and difficult situations, then inspect both conversation quality and resulting records.

  3. Deploy to the intended number or channel, review failures and adjust instructions and integrations.

What it offers

Key features

  • Real-time voice conversations

    Build phone agents with a chosen voice and model, configured for the business conversation.

  • Connected actions

    Use functions and integrations to make the call useful beyond a transcript, such as checking or updating a connected workflow.

  • Call flow configuration

    Define instructions and conversation paths for common requests and exceptions.

  • Testing and monitoring

    Use platform tools to test agents and inspect their behavior after deployment.

  • Telephony options

    Connect calling infrastructure and configure transfer behavior; availability and cost depend on the chosen setup.

Is it a good fit?

Who it’s for

  • Service businesses with repeated inbound questions or appointment calls.
  • Property-management and support teams with clear escalation rules.
  • Developers or agencies building maintained voice workflows for clients.

Strengths

  • Users value conversation quality, responsiveness and integration flexibility.
  • Reviewers describe reducing missed calls and repetitive intake.

Connected tools

Integrations

  • Salesforce
  • HubSpot
  • Google Drive
  • Zendesk
  • Notion
  • Zapier

Listed tools for this workflow. Confirm current support and setup with the provider.

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