import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from hashlib import *

subject = 'JUST A SUBJECT'
main = 'MESSAGE TEST'
Reciver = raw_input('               --> Enter Gmail : ')

msg = MIMEMultipart('alternative')
msg["From"] = 'FROM_TEST'
msg["Subject"] = subject
msg["To"] = Reciver
myText = msg.attach(MIMEText(str(main) , 'plain'))

server = smtplib.SMTP('$host' , $port)
server.ehlo()
server.starttls()
server.login('$username' ,'#passwrd')
server.sendmail('@sendgrid.com' , Reciver , msg.as_string())