Global voicemail delivery API

Drop voicemails into any phone, anywhere.

One REST API call. Worldwide reach. Compliant delivery via your Twilio account, or our built-in providers. Built for SaaS teams that ship.

$ curl https://api.voxdrop.app/v1/drops

curl -X POST https://YOUR-APP/api/public/v1/drops \
  -H "Authorization: Bearer rvm_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "audio_url": "https://cdn.example.com/msg.mp3",
    "to_numbers": ["+14155552671", "+447700900123"]
  }'

Everything you need to send at scale

From single drops to bulk campaigns, with delivery tracking and webhook callbacks.

Global delivery

Reach any E.164 number worldwide. Auto-routing through compliant carriers.

Developer first

REST API, signed webhooks, status callbacks. SDK-ready and idempotent.

Compliant by default

TCPA-aware, opt-out tracking, time-zone guards. Audit log on every drop.

Real-time status

Track delivered / failed / no-voicemail per number. Webhooks fire on every state change.

Bring your own audio

Upload MP3/WAV or stream from any HTTPS URL.

Per-key analytics

Issue scoped API keys, monitor usage and costs per integration.

From signup to first drop in 60 seconds

Create an account

Generate an API key

Issue scoped keys from the dashboard. Hashed at rest, prefixed for identification.

POST to /v1/drops

Send a single number or 5,000 in one request. Track every delivery via webhook.

Simple, usage-based pricing

$0.05 per delivered voicemail. Free during beta — only carrier costs apply.