Twilio, a cloud communications platform, has joined the RapidAPI Marketplace, making it easier for developers to integrate messaging capabilities into web and mobile applications using Twilio's APIs. The Twilio Lookup API is designed to verify phone numbers, identify region-specific formats, and retrieve carrier and caller name information to reduce undeliverable messages. The Verify Phone Number API helps prevent fraud by validating users through SMS and voice, while the SMS API enables sending and receiving text messages, tracking delivery, and managing message history. All Twilio APIs available on RapidAPI are pay-per-use, allowing developers to pay based on usage rather than a monthly subscription. The article provides detailed instructions on subscribing to these APIs and integrating them into applications, showcasing examples with NodeJS and highlighting the pricing structure for different API functionalities.