Improve conversion rates using straight to voicemail

Achieve a call back rate up to 20% for first contacts, or use include it in your business comms workflow to efficiently activate lagging prospects

Fill the missing link in your business communications

Straight to voicemail (sometimes called ringless drop) is a new and still relatively underused medium. Current clients are able to achieve conversion (to sales qualified leads) in the double digits, even with basic workflows. Complement your business communications with straight to voicemail to generate online and offline traffic, increase customers' survey participation, and push your conversion rates even further.

Get started in a flash: 5 minutes are enough

Your business doesn’t need a complex workflow to achieve great results. All it needs to get started is a database of prospects, along with a pre-recorded message presenting your offering. The simplest implementations are quick to set up, already enough to convert, and easier to maintain.
Ringless drops most appreciated benefits lies in its ability to maintain a personal touch in the outreach strategy, despite the automation.

Diagram of a woman using IVR menu

Your business one-stop-shop for all its telco needs

Using the API, your business can mix and match straight to voicemail with regular phone calls and text messages to achieve the perfect communication flow. Pre-qualify the numbers you collect, give options to your prospects using outbound IVR, or include SMS to drive traffic to your website.
Building your business communications on a flexible API is the best way to future-proof your infrastructure.

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

Analyze the call metrics to push ROI even further

Get detailed and actionable analytics (CDR) on your straight to voicemail campaigns. Make use of the call recipient, the key pressed, its duration, its recording and other key metrics to improve your results or track performance for a client. With webhooks, you can import CALLR's data in your back-office or CRM to accurately measure the conversion rate your business achieves with straight to voicemail.

a funnel representation the results of a call campaign

Why are leading brands using CALLR?

Telco Made Easy

Thanks to our API, we are democratizing telcos: you don't need to be a telco expert to thrive with it. We provide you with code samples, extensive documentation, and a reliable support team to help you achieve a faster go-to-market in your business comms projects.

Enterprise-Grade Service

Ensuring a reliable service is as critical for us as it for you; we take every step required to secure its continuity with exhaustive and automated monitoring processes. Should you need any help, you will promptly find a helpful, reactive and top-notch support team ready to jump in.

Shared Expertise

We have the resources and expertise to help you thrive with your any VoIP phone systems: SIP or IAX. As a carrier, we operate our infrastructure in Europe and an interconnection network with tier 1 carriers in the rest of the world: you don't have to worry about coverage or delivery.

Flexibility Through Ownership

CALLR operates its own platform, so you can to cut out unnecessary intermediaries: no more black boxes! Our infrastructure built using open source technologies lowers your cost of ownership and grants you full end-to-end control over your business communications.

All-in-one Telecom

Reach more than 220 countries with unparalleled call quality from a single service. Our API acts as your friendly and exhaustive helper to the world of telecoms: it facilitates your implementation of any service, including real-time call control, phone numbers, IAX, or call tracking.

End-to-end Business Comms

We have been involved as carriers for more than nine years. We're happy to leverage that experience for you, and it goes beyond the mere delivery of your messages: our mission is end-to-end communications.

Our customers are able to achieve a call back rate around 20%. Roughly half of these callbacks (10% of the database) become sales qualified lead.

Brice Berdah

Content Manager @ CALLR

Mix and match straight to voicemail with text and voice thanks to our API

IVR, Call Tracking, Number Allocation... One-API-stop for all your needs

Our API handles all your needs: buy and allocate numbers, control calls in real-time, design custom IVR diagram to handle inbound calls, create SMS or voice notifications for your apps and fetch detailed analytics of all the actions you undertook with our API... Use webhooks for efficient, event-triggered implementations.

  • PHP
  • JavaScript
  • Python
  • Ruby

Copied!

$api = new \CALLR\API\Client; $api->setAuthCredentials('login', 'password'); $target = (object) [ 'number' => '+16469820800', 'timeout' => 30 ]; $messages = ['TTS|TTS_EN-GB_SERENA|Hello world! how are you? I hope you enjoy this call. good bye.']; $result = $api->call('calls.broadcast_1', [$target, $messages, null]);
$api = new \CALLR\API\Client;
$api->setAuthCredentials('login', 'password');

$target = (object) [
  'number' => '+16469820800',
  'timeout' => 30
];

$messages = ['TTS|TTS_EN-GB_SERENA|Hello world! how are you? I hope you enjoy this call. good bye.'];

$result = $api->call('calls.broadcast_1', [$target, $messages, null]);
var api = new callr.api('login', 'password'); var target = { number: '+16469820800', timeout: 30 }; var messages = ['TTS|TTS_EN-GB_SERENA|Hello world! how are you? I hope you enjoy this call! good bye.']; api.call('calls.broadcast_1', target, messages, null).success(function(result) { // });
var api = new callr.api('login', 'password');

var target = {
    number: '+16469820800',
    timeout: 30
};

var messages = ['TTS|TTS_EN-GB_SERENA|Hello world! how are you? I hope you enjoy this call! good bye.'];

api.call('calls.broadcast_1', target, messages, null).success(function(result) {
    //
});
api = callr.Api("login", "password") target = { 'number': '+16469820800', 'timeout': 30 } messages = ['TTS|TTS_EN-GB_SERENA|Hello world! how are you? I hope you enjoy this call. good bye.'] result = api.call('calls.broadcast_1', target, messages, None)
api = callr.Api("login", "password")

target = {
    'number': '+16469820800',
    'timeout': 30
}

messages = ['TTS|TTS_EN-GB_SERENA|Hello world! how are you? I hope you enjoy this call. good bye.']

result = api.call('calls.broadcast_1', target, messages, None)
api = CALLR::Api.new('login', 'password') target = { :number => '+33123456789', :timeout => 30 } messages = ['TTS|TTS_EN-GB_SERENA|Hello world! how are you? I hope you enjoy this call. good bye.'] result = api.call('calls.broadcast_1', target, messages, nil)
api = CALLR::Api.new('login', 'password')

target = {
    :number => '+33123456789',
    :timeout => 30
}

messages = ['TTS|TTS_EN-GB_SERENA|Hello world! how are you? I hope you enjoy this call. good bye.']

result = api.call('calls.broadcast_1', target, messages, nil)

Easily bring your ideas to life with CALLR

They trust CALLR for their business communications

Achieve great ROI with a cost effective ringless drop service

Select country

Voice (Billing is per second)

Inbound

$ /min

Number

$ /num/month

Outbound (landline)

$ /min

Outbound (mobile)

$ /min

SMS

Inbound

$ /sms

Outbound

$ /sms

Straight to voicemail messages cost the equivalent of 3min of outbound mobile voice in any country

Bulk prices apply for high volumes of texts/calls

Contact us for more information

All the features you need for efficient straight to voicemail campaigns

direct voicemail

Direct to voicemail

Leave a message on your recipient's voicemail without ringing their phone.

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.

webhook

Webhooks

We provide webhooks in the form of HTTP POST (JSON payload) for all kinds of trigger events (SMS delivery reports, call statuses, billing) so that you can safely build a real-time experience for your users.

cdr

Call Detailed Report (CDR)

We provide the calls' raw data: caller (CLI) and callee numbers, duration, who hung up, hangup cause code, cost of the call, etc.

dynamic did

Dynamic DIDs

Automatically buy phone numbers and dynamically assign them to your real-time enterprise applications, conferences, call tracking and sip trunks.

dtmf

DTMF (Dual-tone multi frequency)

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