Engage with your customers effortlessly using RAT SMS, the trusted name in bulk SMS Chennai. We specialize in promotional, transactional, and OTP messaging with features like lifetime SMS credit validity, no setup cost, and 99.9% uptime. With our smart SMS gateway and API integrations, businesses can automate notifications, reminders, and campaigns. Our services are ideal for startups... https://ratsms.com/bulk-sms-service-provider/