#!/usr/bin/env python

import smtplib
import sys

gmail_user = ""
gmail_password = ""

email = ""
ans = input("Provider? ")
if ans == "att":
        email= "txt.att.net"
if ans == "sprint":
        email= "messaging.sprintpcs.com"
if ans == "tmobile":
        email= "tmomail.net"
if ans == "verizon":
        email= "vtext.com"
if ans == "virgin":
        email= "vmobl.com"
if email == "":
        sys.exit("Error: Unrecognized provider.")

ans = input("Number? ")
if ans.isdigit():
        if len(ans) == 10:
                toaddr = [ans + "@" + email]
        else:
                sys.exit("Error: Invalid number (Length)")
else:
        sys.exit("Error: Invalid number (NaN)")

subject = input("Subject? ")
msg = input("Message? ")

fmsg = "\r\n".join([
  "From: " + gmail_user,
  "To:" + toaddr[0],
  "Subject: " + subject,
  "",
  msg
  ])

server = smtplib.SMTP('smtp.gmail.com:587')
server.ehlo()
server.starttls()
server.login(gmail_user,gmail_password)
server.sendmail(gmail_user, toaddr, fmsg)
server.quit()