Brand
WhatsApp Business Solution Provider
The membership-only benefits card teamed up with Meta Business Partner Zenvia to integrate the WhatsApp Business Calling API into its sales and customer support operations, growing conversions by 26% and reducing the average conversion time by an estimated 50%.
26%
Increase in conversions, attributed to WhatsApp Business Calling API*
50%
Estimated decrease in average conversion time, attributed to WhatsApp Business Calling API*
9-point
Increase in Net Promoter Score, attributed to WhatsApp Business Calling API*
*Results are self-reported and not identifiably repeatable. Generally expected individual results will differ.
Their Story
Savings for all
Cartão de Todos (“Card for All”) is a membership-only benefits card that gives low-income Brazilian families and individuals access to discounts on health care, education services and entertainment. It’s one of the largest private social discount programs in Brazil, with more than 20 million members as of June 2025
Their Goal
Improving customer contact
The sales and customer support teams for Cartão de Todos regularly interact with potential new customers and cardholders through conversations on its WhatsApp channel. Cartão de Todos also offers phone support, but noticed that some customers stopped responding when a sales or support representative offered to call them to talk more about the product or resolve their issue.
“The adoption of WhatsApp voice calls in our telesales and customer support channels has brought greater speed and closeness to our customer relationships. Unifying service in a single conversation environment has made communication more fluid and efficient, eliminating steps and reducing response time. This evolution strengthens our commitment to delivering a practical, accessible and customer-centered experience.”
Rafael Badaró
Operations Manager, Cartão de Todos
Their Solution
WhatsApp-integrated calling
The company partnered with Meta Business Partner Zenvia to implement the WhatsApp Business Calling API, which enabled agents to conveniently make phone calls to customers directly within WhatsApp, saving time and increasing the chances of the customer being available to speak. The seamless integration allowed the company’s sales representatives to build trust during key decision moments and helped its support agents resolve complex issues in a timely, more personally engaging way.
Their Success
A better customer experience
Over one month (May 9–June 8, 2025), Cartão de Todos reported increased conversions, decreased average conversion time and an increase in its Net Promoter Score, all attributed to WhatsApp Business Calling API:
- 26% increase in conversions, attributed to WhatsApp Business Calling API*
- 50% estimated decrease in average conversion time, attributed to WhatsApp Business Calling API*
- 9-point increase in Net Promoter Score, attributed to WhatsApp Business Calling API*
*Results are self-reported and not identifiably repeatable. Generally expected individual results will differ.
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