SendMail connects to the server at addr, switches to TLS if possible, authenticates with the optional mechanism a if possible, and then sends an email from address from, to addresses to, with message msg. The addr must include a port, as in "".

The addresses in the to parameter are the SMTP RCPT addresses.

The msg parameter should be an RFC 822-style email with headers first, a blank line, and then the message body. The lines of msg should be CRLF terminated. The msg headers should usually include fields such as "From", "To", "Subject", and "Cc". Sending "Bcc" messages is accomplished by including an email address in the to parameter but not including it in the msg headers.

The SendMail function and the the net/smtp package are low-level mechanisms and provide no support for DKIM signing, MIME attachments (see the mime/multipart package), or other mail functionality. Higher-level packages exist outside of the standard library.


	}(strings.Split(server, "\r\n"))

	err = SendMail(l.Addr().String(), nil, "[email protected]", []string{"[email protected]"}, []byte(strings.Replace(`From: [email protected]
To: [email protected]
Subject: SendMail test

	from := "[email protected]"
	to := []string{"[email protected]"}
	return SendMail(hostPort, auth, from, to, []byte("Subject: test\n\nhowdy!"))

	auth := smtp.PlainAuth("", "[email protected]", "password", hostname)

	err := smtp.SendMail(hostname+":25", auth, from, recipients, msg)
	if err != nil {