Message limit added and all tests passing.

config.py

@@ -26,6 +26,7 @@ class Config(object):
     VERIFY_CODE_FROM_EMAIL_ADDRESS = os.environ['VERIFY_CODE_FROM_EMAIL_ADDRESS']
     NOTIFY_EMAIL_DOMAIN = os.environ['NOTIFY_EMAIL_DOMAIN']
     PAGE_SIZE = 50
+    SMS_CHAR_COUNT_LIMIT = 495
 
     BROKER_URL = 'sqs://'
     BROKER_TRANSPORT_OPTIONS = {