How Sunday used OTPs to grow user engagement with Prelude

Sunday, a comprehensive checkout solution aimed at enhancing the dining experience, has leveraged One-Time Passwords (OTPs) to boost user engagement and streamline loyalty program integration for its restaurant clientele. Faced with rising costs and declining service quality from their previous SMS API provider, Sunday transitioned to Prelude, which offers a more reliable and cost-effective solution for sending OTPs globally. Prelude's robust network connects to over 1,000 routes across 230 countries and supports multiple messaging channels, ensuring seamless guest interactions. This switch not only improved message deliverability and reduced costs but also provided Sunday with premium customer support through a dedicated Slack channel, enhancing operational efficiency and minimizing downtime. As a result, Sunday has transformed its messaging strategy, significantly enhancing its B2C engagement program while maintaining high service availability during peak times.