The script schema for the email script seems slightly different than the email task, in particular the send function.
There is an extra 'email' object in the json that's not accounted in the task

https://github.com/google/starthinker/blob/master/scripts/email_to_bigquery.json#L20

    { "email":{
      'auth': 'user',
      "read":{
        "email":{
          "from":...

vs this one that seems to be working, without the additional "email" object

    { "email":{
      "auth":"user",
      "read":{
        "from":"

Thank you