Telnyx SMS

Send SMS messages through Telnyx — appointment confirmations, reminders, call summaries, and custom messages.

What It Does

Appointment confirmations — Automatic SMS when an appointment is booked
Appointment reminders — SMS reminders before scheduled appointments
Call summaries — Send a text summary after a call ends
Missed call notifications — Alert customers that you received their call
Custom messages — Send any text message to a phone number

Telnyx is Akol’s built-in telephony provider. If you’re using Akol phone numbers, Telnyx SMS is already available — no additional setup needed for basic SMS.

How to Connect

Open Integrations

Go to Dashboard > Integrations and find Telnyx SMS.

Enter Your API Key

If you’re using your own Telnyx account, enter your Telnyx API key. If you’re using Akol-provided phone numbers, this may already be configured.

Configure Settings

Optionally set a default “from” number and messaging profile ID.

Click Connect

Click Connect to activate SMS sending.

SMS Types

Type	When It’s Sent
Confirmation	Immediately after an appointment is booked
Reminder	Before the scheduled appointment time
Summary	After a call ends
Missed call	When a call is missed or goes to voicemail
Cancellation	When an appointment is cancelled or rescheduled
Custom	Triggered by your agent during or after calls

Troubleshooting

SMS Not Sending

Verify your Telnyx API key is valid
Check that your phone number has SMS capabilities
For US messaging, ensure A2P registration is complete

Wrong “From” Number

Set your default “from” number in the integration settings
Or configure a messaging profile in your Telnyx account

Messages Not Received

Check the recipient’s phone number format (E.164 required)
Verify the recipient hasn’t blocked your number
Check your Telnyx portal for delivery status

Tips

Use a messaging profile — Telnyx messaging profiles help with carrier routing and deliverability
Register for A2P — Required for business SMS in the US
Keep messages short — SMS has a 160-character limit per segment; longer messages cost more