It was a bit annoying, but the regular expression on this site almost worked out of the box. I had to add in a few line breaks:

package main

import (
    "fmt"
    "regexp"
)

var emailRegEx = regexp.MustCompile(
    `^(?:[a-z0-9!#$%&'*+/=?^_`+
    "`"+
    `{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`+
    "`"+
    `{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])`)

func verifyEmail(email string) bool {
        if (emailRegEx.MatchString(email) == true) {
            return true
        }
        return false
    }

func main() {
    fmt.Println(verifyEmail("[email protected]"))
}

Go Playground link: https://play.golang.org/p/Gq67bAJeK2r