Method SendWithTLS

email.go:545–611

SendWithTLS sends an email over tls with an optional TLS config. The TLS Config is helpful if you need to connect to a host that is used an untrusted certificate.

(addr string, a smtp.Auth, t *tls.Config)

// The TLS Config is helpful if you need to connect to a host that is used an untrusted
// certificate.
func (e *Email) SendWithTLS(addr string, a smtp.Auth, t *tls.Config) error {
	// Merge the To, Cc, and Bcc fields
	to := make([]string, 0, len(e.To)+len(e.Cc)+len(e.Bcc))
	to = append(append(append(to, e.To...), e.Cc...), e.Bcc...)
	for i := 0; i < len(to); i++ {
		addr, err := mail.ParseAddress(to[i])
		if err != nil {
			return err
		}
		to[i] = addr.Address
	}
	// Check to make sure there is at least one recipient and one "From" address
	if e.From == "" || len(to) == 0 {
		return errors.New("Must specify at least one From address and one To address")
	}
	sender, err := e.parseSender()
	if err != nil {
		return err
	}
	raw, err := e.Bytes()
	if err != nil {
		return err
	}

	conn, err := tls.Dial("tcp", addr, t)
	if err != nil {
		return err
	}

	c, err := smtp.NewClient(conn, t.ServerName)
	if err != nil {
		return err
	}
	defer c.Close()
	if err = c.Hello("localhost"); err != nil {
		return err
	}

	if a != nil {
		if ok, _ := c.Extension("AUTH"); ok {
			if err = c.Auth(a); err != nil {
				return err
			}
		}
	}
	if err = c.Mail(sender); err != nil {
		return err
	}
	for _, addr := range to {
		if err = c.Rcpt(addr); err != nil {
			return err
		}
	}
	w, err := c.Data()
	if err != nil {
		return err
	}
	_, err = w.Write(raw)