Voice and SMS appointment reminders

Schedule appointments, set up automated voice and SMS reminders and let your customers easily cancel or reschedule: reduce no shows and automate appointment scheduling.
With webhooks, integrate CALLR with your existing infrastructure and CRM.

Voice or SMS appointment reminders

Mobile is the most effective medium. 90% of SMS are opened in the first 5 minutes. Voice makes it personal and accessible to anyone: even those who don't have a smartphone or are not used to texting answer their calls. Send SMS or voice appointment reminders, or create a workflow mixing both to maximize deliverability.

Examples of political party, NGO and volunteer texts

Interactive and automated appointment scheduler

Use automated text messages or call reminders to optimize your online appointment scheduling. Set up text or call reminders for your customers that they can respond to. They can confirm their meeting, or let you know if they can't make it or need to reschedule: all they need to do is a simple key press (voice) or a reply (SMS).

Example of a conversation by sms between a company and a user

Reminders to reduce no shows and fill open slots

Reduce your no-show rate with call and SMS reminders. Create fallback scenarios to maximize the deliverability of your reminders by mixing text and voice to make sure everyone gets your messages. Upgrade your appointment system and make the most of your business hours, automatically reschedule when there is a cancellation.

An SMS with the detail of its delivery (DLR)

Go even further with our flexible API

Keep control of your data: with webhooks, you can push CDR of calls and SMS DLR to an endpoint on your domain and integrate CALLR with your own infrastructure and CRM. CALLR helps you keep your customer data up to date and in one place.

SIP trunk - A terminal window opened with example of code on the background. An illustration with a server in a dialog bow forefront

Upgrade your appointment booking software

Create your own auto-attendant: save time and money, spare a receptionist.

Our API is well documented and our support team is top-notch: start using CALLR in the blink of an eye. You can go futher than just appointment scheduling with our one-stop-shop voice and SMS API: create IVR diagrams to route incoming calls, broadcast messages to your customers with TTS or process their input with DTMF. It's time to craft yourself a smart, autononous and efficient receptionist.

  • Voice broadcast (PHP)
  • MT SMS DLR (Python)

Copied!

require 'vendor/autoload.php'; $api = new CALLR\API\Client; $api->setAuth(new CALLR\API\Authentication\LoginPasswordAuth('username', 'password')); $target = new stdClass; $target->number = '+33123456789'; $target->timeout = 30; $messages = [131, 132, 134]; $result = $api->call('calls.broadcast_1', [$target, $messages, null]);
require 'vendor/autoload.php';

$api = new CALLR\API\Client;
$api->setAuth(new CALLR\API\Authentication\LoginPasswordAuth('username', 'password'));

$target = new stdClass;
$target->number = '+33123456789';
$target->timeout = 30;

$messages = [131, 132, 134];

$result = $api->call('calls.broadcast_1', [$target, $messages, null]);
# pip install callr import callr api = callr.Api("login","password") options = {'webhook': {'endpoint': 'http://yourdomain.com/webhook_path'}} result = api.call('sms.send', 'SMS', '+16469820820', 'Hello SMS world! (with DLR pushed to an URL endpoint)', options)
# pip install callr

import callr
api = callr.Api("login","password")

options = {'webhook': {'endpoint': 'http://yourdomain.com/webhook_path'}}

result = api.call('sms.send', 'SMS', '+16469820820', 'Hello SMS world! (with DLR pushed to an URL endpoint)', options)

Cost-efficient voice and SMS event reminders

I want to call/text in:

Voice (Billing is per second)

Inbound

$ /min

Number

$ /num/month

Outbound (landline)

$ /min

Outbound (mobile)

$ /min

SMS

Inbound

$ /sms

Outbound

$ /sms

Looking for a high volume of texts of voice? Bulk prices apply

Contact us for more information

Schedule text messages and call reminders for appointment systems

mt

SMS Termination (MT)

Send SMS in more than 200 countries with very low latency and high deliverability.

shortcode

Shortcode and Long Virtual Number

For your business, you can choose between a shortcode (4 or 5 digits) and long virtual number for 2-WAY messaging. Local limitations may apply.

dtmf

DTMF (Dual-tone multi frequency)

We detect "Press 1" scenarios to help you build custom IVR.

tts

Multilingual Text-to-Speech (TTS)

We automatically transform a written script into an audio speech in multiple languages so you don't have to manage multiple audio recordings.

analytics

Analytics

Our API transforms your calls and SMS raw data into easy-to-digest analytics.

custom sender

Custom Sender ID

Use an alphanumeric sender ID and be better identified by your prospects or customers. (Local limitations may apply).

We definitely limit the number of no-shows by using SMS via CALLR

Maxence Coisne

Co-founder of Baby Sittor

Feature-rich appointment reminder system

Features callr-logo
Integration with existing infrastructure and CRM (Webhooks)
Voice and SMS on the same platform
Voice+SMS workflows
Interactive communications (2way and IVR)
Multilingual TTS
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Carrier grade quality

As a carrier, we operate our own infrastructure and routes in Europe and an interconnection network with tier 1 carriers in the rest of the world. This ensures complete control over the quality of the traffic we provide for all our customers.

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Reliable partner

In 6 years, we've built and maintained a reliable and innovative worldwide network. Thanks to our efficient infrastructure and routing system, we’re able to offer both competitive pricing and premium quality.

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Global network

With points of presence around the world, reach more than 220 countries with unparalleled call quality. Break into new countries and smoothly scale up existing infrastructures with our powerful network.