Customer experience
Enhance your customer journey with voice and SMS conversations
Use Callr’s API to automatically engage your customers when and how they need it — at scale, across every channel.
Customer Support
“How can we help?”
Authentication
“Your one-time password is 8jif^X6j”
Notifications
“You’re having lunch tomorrow at Pizzeria Amalfi!”
Marketing Messages
“Today only! Free shipping on all orders.”
Handling 2.5 million calls daily for 300+ companies
Why Callr
Create personalized communication flows and convert more customers
Everything you need to engage customers at the right moment, on the right channel.
Build custom flows
Create complex scenarios to send the right message at the right time, with the simplicity of low-code development.
Get more done with AI
Get written recaps and insights from every conversation, set up smart AI Voice Agents to book meetings or extract user insights — there’s so much you can do with Callr AI.
Seamlessly integrate with our API
Callr fits into your product through a well-documented REST API and webhooks.
Voice & SMS API platform
Engage and inform your customers at scale
Reach customers in more than 220 countries. Reduce no-shows, improve conversions, and deliver a great customer experience.
Reach customers anywhere
Send notifications, confirmations, and reminders by SMS, email, and voice — in 220+ countries on infrastructure we own.
Built for scale
From a single OTP to millions of messages a day, the platform delivers with carrier-grade reliability.
Use cases
Discover what you can do with Callr’s API
A handful of the customer journeys teams build on Callr every day.
Notify and alert users
Deliver critical alerts and confirmations on time via SMS, email, and voice messages.
Improve support with AI Agents
Set up a support voice AI Agent and let customers reach out through their preferred channel.
Manage your workforce
Monitor off-site employees’ activity through clock-in / clock-out phone numbers.
Send reminders
Reduce no-shows and boost sales with timely reminders — your best bet to grow conversion rates.
Enhance your marketing
Drive traffic to your website with SMS, email, and voice marketing campaigns.
Send One-Time Passwords
Make authentication simpler and more secure with OTP and 2FA.
Voice AI Agents
Voice AI Agents
Assist incoming callers through their journey, capture key data, and enhance their overall experience.
- Health
- Restaurant
- Real estate
- Debt collection
Enable self-serve solutions
Let users schedule meetings, pay a bill, or confirm an order with the simplicity of sending an SMS.
Build dynamic call routing rules
Create flexible, dynamic rules to direct users to the right agent — 100% customizable to your business processes.
Implement smart AI Agents
Let users have voice or message conversations with virtual assistants — for support, to capture key data, or to handle incoming leads.
“I’m looking for a 2-bedroom flat, for a budget of €600,000.”
AIName
Eva Carr
e.carr@email.com
Eva Carr is looking for a 2-bedroom flat, for a budget of €600,000 in Paris
“Hello Eva, we found 2 matches. Click here to check them out.”
Build custom flows
Integrate seamlessly with your product
Whatever your need, Callr’s API makes it simple to implement custom notifications and IVR flows in your solution, app, or service.
- API-based
- Serverless
- Low-code programming
Build and implement fast
Ship with our low-code, serverless solution and a vast set of actions to build flows tailored to your needs.
Push data anywhere
Sync conversations and insights into Salesforce, Google Ads, and the rest of your stack through our API and webhooks.
AI
Leverage AI to extract more value from your conversations
Be there when your customers need you — to make a purchase, file a support request, or book an appointment.
- Analyze conversations and capture specific data, then push it to your CRM
- Build Voice AI Agents that understand your users’ requests
- Plug into your app, database, or knowledge base to cater to your customers
⚡ AI summaryName
Eva Carr
Phone
+33 6 39 98 12 34
e.carr@email.com
Buying intent
HOT 🔥
Overall sentiment
Positive
Eva Carr is looking for an apartment in Paris, close to a metro station. Her budget is €600,000 but she is willing to consider more expensive options if she finds something she really likes.
Callr works with any public or private AI model — including these four:
What our customers say
“Call tracking is greatly appreciated by our clients. It has increased awareness of our brand and the trust our clients have in our services.”
Dassin Bidouzo
Chief Digital Officer, Bien’Ici
“We’ve worked with Callr since the beginning and our businesses have grown together. We appreciate their responsiveness and their ability to keep evolving their API.”
Yannick Fauchille
Co-founder & Business Lead
“With Callr, we can easily prove ROI to our clients without wasting time manually looking for various data sources.”
Julien Balmont
Co-founder & CTO, Zenchef
Infrastructure
We own our network
Global coverage
Order numbers in one click across 220+ countries — including premium, vanity, and toll-free numbers.
Encrypted & secure
State-of-the-art data encryption with HTTPS, SIP TLS, and SRTP.
Reliable network
Multiple data centers and servers worldwide for a robust service you can rely on.
Registered carrier
We operate our own network for better performance, localization, and support.
Discover how Callr can help you get more from your conversations
From the first ring to the closed deal, put your voice and message data to work.
Interactions & data
Integrate voice and message conversations in your product, capture data, and push it anywhere you need.
Learn more →Sales enablement
Identify high-value callers, share crucial prospect information with sales, and seal the deal.
Learn more →Data Intelligence
Automatically analyze every voice and message conversation with AI to learn more about your customers.
Learn more →