Voice

When a message needs a voice

Programmable calls for verification codes, reminders and urgent alerts — natural text-to-speech, keypad responses and a full record of every call.

Incoming callNDNorthside Dental+61 2 8000 1234 · Verified caller

Live caption“Hi Sam, this is Northside Dental. Press 1 to confirm Thursday at 10:30, or 2 to choose another time.”

Why SendLab for voice

Calls that carry the important moments

Voice verification codes

Read one-time codes aloud for customers who can’t receive a text, or as a second channel.

Natural text-to-speech

Clear, natural voices in multiple languages and accents — no recording studio needed.

Reminders and alerts

Call when it matters most: urgent alerts, missed payments or a last-minute change.

Keypad responses

“Press 1 to confirm, 2 to reschedule” — responses arrive in your app by webhook.

Call status events

Ringing, answered, voicemail, completed — with duration and cost for every call.

Numbers and caller ID

Local numbers and a recognisable caller ID, set up and registered with you.

The API

Place a call in one request

Say it with text-to-speech, collect a keypad response and get every status by webhook.

Text-to-speech in natural voices
Keypad input to your app
Call status, duration and cost

More for developers →

await sendlab.calls.create({
  to: "+61412345678",
  from: "+61280001234",
  say: "Your Northside Dental code is 4 8 2 1 9 0.",
  voice: "en-AU",
  // repeat once if the call isn't answered
  retry: { attempts: 1, after: "2m" },
});

sendlab.calls.create(
    to="+61412345678",
    from_="+61280001234",
    say="Your Northside Dental code is 4 8 2 1 9 0.",
    voice="en-AU",
    retry={"attempts": 1, "after": "2m"},
)

curl https://api.sendlab.ai/v1/calls \
  -H "Authorization: Bearer $SENDLAB_API_KEY" \
  -d '{
    "to": "+61412345678",
    "from": "+61280001234",
    "say": "Your Northside Dental code is 4 8 2 1 9 0.",
    "voice": "en-AU"
  }'

Add more channels

SMS

Reach every phone. Two-way, registered senders and delivery you can trace.

Explore SMS 02

RCS

Verified, branded messages with rich cards and one-tap replies.

Explore RCS 03

Email

Transactional email with authenticated domains and clear delivery events.

Explore Email

Ready to take your messaging further

Tell us what you want your customers to be able to do. We’ll scope it with you and help you launch.