Check AnonAddy, it does exactly what you want and it is open source too [0]. You can self host or use their paid service at $1/month. They also did a Show HN th

Check AnonAddy, it does exactly what you want and it is open source too [0]. You can self host or use their paid service at $1/month. They also did a Show HN thread when it was launched [1] [0] - https://github.com/anonaddy/anonaddy https://github.com/anonaddy/anonaddy [1] - https://news.ycombinator.com/item?id=21648096 https://news.ycombinator.com/item?id=21648096