You must be aware on this Google scripted app at the following link which lets you receive SMS notification of emails arrived at your Gmail address.
https://developers.google.com/apps-script/articles/gmail_filter_sms
I tried it; it worked in the beginning and sent me a few notifications but later on it stopped working, I followed the same process(copying and pasting the code in google doc, script editor) again and it then started working, but now it has totally stopped working. I redid the same process again but to no use. It is not sending me any notifications at all. Please help