KingSMTP

KingSMTP is an independent SMTP relay service launched in 2017, designed with developers in mind. Founded by a developer frustrated by existing email solutions, KingSMTP prioritizes simplicity, reliability, and privacy. It offers straightforward email infrastructure to send, receive, and track transactional emails efficiently, ensuring a clean inbox rate of over 99% and a perfect score on mail-tester.com.

With flexible payment options, KingSMTP allows users to pay as little as $20 per month for its SMTP servers, accepting both credit cards and cryptocurrencies like Bitcoin and Monero for those seeking anonymity. The service is self-funded, ensuring that it remains free from external pressures that could compromise quality. Built around user-friendly features, KingSMTP has a clean dashboard and a straightforward API, eliminating unnecessary complexities. With a commitment to customer support and transparency, KingSMTP continues to enhance its offerings while maintaining a focus on privacy and dependable performance. Users can start with a free trial, experiencing immediate setup and reliability.