txthinking / mailx

$ go get github.com/txthinking/mailx

server := &mailx.SMTP{
    Server:   "smtp.mailtrap.io",
    Port:     465,
    UserName: "e3f534cfe656f4",
    Password: "b6e38ddc0f1e9d",
}

message := &mailx.Message{
    From: &mail.Address{
        Name:    "mailx",
        Address: "[email protected]",
    },
    To: []*mail.Address{
        {
            Name:    "Cloud",
            Address: "[email protected]",
        },
    },
    Subject: "Hello",
    Body:    "I <b>love</b> U.",
    Attachment: []string{
        "/etc/hosts",
    },
}

if err := server.Send(message); err != nil {
    log.Fatal(err)
}