Library that tries to connect to SMTP host by TO/target email address:
Lookup MX and A
Try to connect to SMTP on different ports
Try to use STARTTLS if server supports it
Return SMTP Client with Mail() and Rcpt() already called
from := "sender@example.com"
to := "target@example.org"
client, err := trysmtp.Connect(from, to)
if err != nil {
// something went wrong!
}
client.Data([]byte("your email data here"))
Connect to SMTP server and call MAIL and RCPT commands
NOTE: check if client is not nil, because it can return non-fatal errors with initialized client