notifyEmail.py

import imaplib
import email
from json import loads

def email_login_info(file_name='login.json'):
    try:
        file_keys = open(file_name)
    except:
        file_keys = open(file_name, 'w')
        raw_json = '''{
        "email":"",
        "password":""
        }
         '''
        print("Error! JSON file does not exist!")

    parsed_json = loads(file_keys.read())

    return parsed_json

def get_latest_email():
    FROM_EMAIL  = email_login_info()['email']
    FROM_PWD    = email_login_info()['password']
    SMTP_SERVER = "imap.gmail.com"
    SMTP_PORT   = 993

    mail = imaplib.IMAP4_SSL(SMTP_SERVER)
    mail.login(FROM_EMAIL,FROM_PWD)

    mail.select('inbox')
    etype, data = mail.search(None, 'ALL')
    mail_ids = data[0]
    id_list = mail_ids.split()
    first_email_id = int(id_list[0])
    latest_email_id = int(id_list[-1])
    return latest_email_id

starting_email_id = get_latest_email()
print("Starting ID of {}".format(starting_email_id))
while True:
        if not starting_email_id == get_latest_email():
            print("Email recieved!")
            starting_email_id += 1
            print("Starting ID is now {}".format(starting_email_id))