An e mail handle in Golang may be validated utilizing the usual library perform mail.ParseAddress. This perform parses an RFC 5322 handle, however through the use of it appropriately, we will additionally test if a string is a sound e mail handle and get it from the "title <local-part@area>" format.
package deal fundamental
import (
"fmt"
"internet/mail"
)
func validMailAddress(handle string) (string, bool) {
addr, err := mail.ParseAddress(handle)
if err != nil {
return "", false
}
return addr.Handle, true
}
var addresses = []string{
"foo@gmail.com",
"Gopher <from@instance.com>",
"instance",
}
func fundamental() {
for _, a := vary addresses {
if addr, okay := validMailAddress(a); okay {
fmt.Printf("worth: %-30s legitimate e mail: %-10t handle: %sn", a, okay, addr)
} else {
fmt.Printf("worth: %-30s legitimate e mail: %-10tn", a, okay)
}
}
}
Output:
worth: foo@gmail.com legitimate e mail: true handle: foo@gmail.com
worth: Gopher <from@instance.com> legitimate e mail: true handle: from@instance.com
worth: instance legitimate e mail: false 
