Hey, I'm Caleb Lee, and I founded Sendone in 2025. I'm a self-taught engineer and have been building since middle school. I love server-side development and distributed systems.
Sendone was created because I wanted a way for other founders or solopreneurs to easily send cold emails at scale. Rather than having to connect a third-party domain, building on top of Gmail allows users to take advantage of their personal email and avoid spam filters.
I hope you find use in this project. If you have any suggestions, ideas, or just want to say hi, email me at support@sendone.app