You won’t find many references to e-mail in the Genero documentation or any e-mail library in the Genero extension packages. That does not mean you cannot send e-mail from a Genero application. To send e-mail from a Genero application you need to ask yourself how do applications written in other languages send e-mail?
There are two broad techniques, one using the mailto URI on the front-end, and the other interacting with mail servers from the application server.
To learn more, read
https://4js.com/ask-reuben/ig-145/