使用PL / SQL，Oracle从gmail发送电子邮件

I'm trying to build a procedure to send an email from 'Gmail' account to another receipt. Can you help me to make a procedure to complete this objective. What I need is just call the procedure to send the 'gmail'. If it is necessary to cc the mail. I have mentioned the code below which I tried. Thank you!I'm trying to build a procedure to send an emai