Texting that lives inside your chatbot. UK and Canada in 30 seconds. US in a week.
VocUI handles the Telnyx provisioning, carrier paperwork, and segment metering so you can focus on the conversation. From $15/month plus per-segment usage.
The US carrier registration, demystified
US carriers require every business that sends application-to-person SMS to register the use case. We handle the filing — here's the rough timeline so you know what to expect.
- 01Day 1
You request a US number
Pick a number in the dashboard. We submit your business info and SMS use case to The Campaign Registry on your behalf.
- 02Day 1–7
Carrier review
US carriers review the registration. You can keep building the chatbot in parallel — UK and Canadian numbers can run while US is pending.
- 03Day 7–10
Number activates
Once approved, your US number starts sending. We monitor throughput limits and flag any deliverability issues that need your attention.
Coverage across the channels your customers actually use
Three regions are first-class today. The rest of Telnyx's global SMS coverage is available on request — drop us a note and we'll provision a number.
US
United States
Required by US carriers. We file the paperwork. Most registrations clear in 7–10 days.
CA
Canada
Local Canadian numbers go live in about 30 seconds. No registration required.
GB
United Kingdom
UK shortcodes and long numbers activate immediately. Standard UK SMS regulations apply.
INT
Other regions
Australia, Ireland, Germany, France and more — Telnyx coverage exists; we provision on request.
Honest segment-based pricing
SMS billing is per segment (~160 GSM-7 chars / 70 unicode chars). A long message that splits into three parts is three segments. We pass Telnyx's wholesale rates through with a small margin — no minimum spend, no commitment.
| Region | Outbound | Inbound | Notes |
|---|---|---|---|
| US | $0.015 / segment | Free | 10DLC required |
| Canada | $0.015 / segment | Free | Instant |
| UK | $0.015 / segment | Free | Instant |
Add-on subscription: $15/month per chatbot · billed monthly with your VocUI plan.
Three patterns that turn SMS on quickly
Appointment confirmations & reminders
Trigger SMS confirmations the moment a booking is made. Send reminders 24h and 1h ahead. Reply YES to confirm, NO to reschedule — your chatbot handles the back-and-forth.
Two-way support over text
Customers text the same number they’d call. Your chatbot answers from the same knowledge base, hands off to a human when needed, and keeps full conversation history.
Triggered notifications
Order shipped, payment failed, account verification — fire SMS from any workflow. Use the API directly or trigger from your chatbot conversation logic.
Send a text in three lines
Use the official @vocui-sdk/client npm package or hit the REST endpoint directly. Auth is the same API key you use for the chat API.
// Send an SMS from your VocUI chatbot
import { VocUIClient } from '@vocui-sdk/client';
const vocui = new VocUIClient({ apiKey: process.env.VOCUI_API_KEY! });
await vocui.sms.send({
chatbotId: 'cb_abc123',
to: '+14155551234',
message: 'Hey — your appointment is confirmed for tomorrow at 2pm.',
});
Stand up SMS without standing up a Telnyx account
Numbers, registrations, segment metering, opt-out compliance — all included in the add-on. Add it from your dashboard the moment you're on a paid plan.