import "github.com/goware/emailx"

func main() {
    err := emailx.Validate("[email protected]")
    if err != nil {
        fmt.Println("Email is not valid.")

        if err == emailx.ErrInvalidFormat {
            fmt.Println("Wrong format.")
        }

        if err == emailx.ErrUnresolvableHost {
            fmt.Println("Unresolvable host.")
        }
    }
}

import "github.com/goware/emailx"

func main() {
    fmt.Print(emailx.Normalize(" [email protected]. "))
    // Prints [email protected]
}