import smtplib
import email.utils
from email.mime.text import MIMEText

smtpserver = smtplib.SMTP("smtp.gmail.com",587)
smtpserver.ehlo()
smtpserver.starttls()
smtpserver.ehlo()
smtpserver.login('username@gmail.com', 'pwd')
msg['Subject'] = "subject line"
msg['From'] = 'newusername@gmail.com'
msg['To'] = 'friend@gmail.com'
smtpserver.sendmail(sender, recipients, msg.as_string())