Solution · IVR and Voice Calls

IVR and voice call API: when your WhatsApp API messages go unread, the call gets through

When WhatsApp API messages and SMS go unread, a phone call gets through. Run IVR calls for collections, confirmations and satisfaction surveys by voice, all on D-API's multichannel platform and triggered by API.

  • Availability: 99.9% uptime
  • Results: In real time
  • Channel: Multichannel
The problem

You shouldn't be solving this.

Problems D-API takes off your plate.

  1. Your message goes unread, and the invoice goes unpaid

    Invoices go overdue, appointments are missed and surveys go unanswered because the customer simply does not open WhatsApp or SMS. You need a channel that demands attention.

  2. Calling by hand does not scale

    Relying on agents to confirm orders, collect payments or run satisfaction surveys ties your operation to business hours and team size. You need volume without hiring more people.

  3. You do not know what happened on the call

    Without structured results, every voice campaign is a black box. You cannot measure who picked up, who confirmed and what to do next.

How it works

From zero to production in four steps.

  1. Talk to sales

    Tell us your use case (collections, confirmations or surveys) and we design the right voice flow for your operation.

  2. Integrate via API

    Connect IVR to your application with the REST API documented in Swagger and trigger calls from wherever your system already runs.

    Read the docs
  3. Orchestrate your multichannel

    Combine voice with WhatsApp and SMS on the same platform and build recovery flows with n8n, Make or Zapier.

    See integrations
  4. Call and track

    Run your automated calls and follow result reports in real time to adjust the strategy.

Works with the tools you already use

  • REST API
  • Swagger
  • n8n
  • Make
  • Zapier
What you get

Automated voice that reaches people who ignore messages.

  • IVR triggered by API

    Place calls with automated voice straight from your application or flow, with no agent. See the voice reference in Swagger and start integrating today.

  • IVR for collections

    Automate payment reminders and collections by phone to reach contacts who ignore reminders by text, with a consistent message on every call.

  • Reaches people who do not open messages

    Use voice as a recovery layer: whoever did not reply on WhatsApp or SMS gets an automated call, and you close the loop on the contact.

  • Confirmations and surveys by voice

    Confirm orders and appointments and run satisfaction surveys by phone automatically, at whatever volume your operation needs.

  • Results in real time

    Follow call result reports in real time to know what happened on each call and react right away.

  • Voice in your multichannel

    IVR lives alongside WhatsApp and SMS on the same D-API platform and integrates with n8n, Make and Zapier, orchestrating voice and text in one strategy.

FAQ

Frequently asked questions.

What is D-API IVR?
It is automated voice over phone calls, triggered via API. You place calls from your application for cases such as automated collections, order or appointment confirmations and satisfaction surveys, without relying on agents.
How do automated calls help with people who do not reply on WhatsApp?
Voice works as a recovery layer. Contacts who did not open or reply on WhatsApp or SMS get an automated call, closing the loop on a channel that usually draws more attention.
Can I integrate IVR with my system?
Yes. IVR is triggered by a REST API documented in Swagger (OpenAPI 3) and also connects to automation tools such as n8n, Make and Zapier. Check the docs to integrate.
Can I track call results?
Yes. D-API provides call result reports in real time, so you know what happened on each call and can react immediately.
Does voice work together with WhatsApp and SMS?
It does. IVR lives alongside WhatsApp and SMS on the same D-API platform, enabling a multichannel strategy where voice and text work together in the same operation.

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