hello all. my zen cart version is 1.3.9h.
i am trying to set up my website email system connect with gmail but failed.i chose stmpuath for my email options, and here are the other options:

SMTP Email Account Mailbox myname######################
SMTP Email Account Password **********
SMTP Email Mail Host smtp.gmail.com
SMTP Email Mail Server Port 587

and then i try to send a gift certificate for testing but it said cannot connect to the server ... can anyone tell my why or because it's a
free mail and i should buy one??Thanks all!!