mailer.py

import smtplib
import config

emails = open("emails.txt","r")
log = open("log.txt","a+")
# Gmail Sign In
gmail_sender = config.USER
gmail_passwd = config.PASSW
server = smtplib.SMTP()
server.connect('smtp.gmail.com', 587)
server._host = 'smtp.gmail.com'
server.ehlo()
server.starttls()
server.login(gmail_sender, gmail_passwd)
log.write("Connecting to mail\n")
SUBJECT = config.SUBJECT
TEXT = config.TEXT
i = 1
done = False
for email in emails:
    if i % 99 ==0 :
        print("Inside Disconnecting to mail")
        log.write("Inside Disconnecting to mail\n")

        server.quit()
        server = None
        print("Inside Connecting to mail")
        log.write("Inside Connecting to mail\n")
        server = smtplib.SMTP()

        server.connect('smtp.gmail.com', 587)
        server._host = 'smtp.gmail.com'
        server.ehlo()
        server.starttls()
        server.login(gmail_sender, gmail_passwd)
        print("Inside Connecting complete")
        log.write("Inside Connecting to mail complete\n")
    TO = email[:17]
    if i == 900:
        done = True
    if not done:

        BODY = '\r\n'.join(['To: %s' % TO, 'From: %s' % gmail_sender, 'Subject: %s' % SUBJECT, '', TEXT])

        try:
            server.sendmail(gmail_sender, [TO], BODY)
        except:
            print ('error sending mail',TO)
            log.write("Not graceful up to {}\n".format(TO))
            break
    else:
        print("until but not",TO)
        log.write("Finished {} \n".format(TO))
        break
    i += 1
server.quit()
print("Disconnecting")
log.write("Disconnecting to mail\n")
log.close()
emails.close()