Automation, Google App Script

Google App Script – Send Email Using Service Account with Domain Wide Delegation

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This script allows you to send emails using Google App Script and a domain-wide delegation service account so that the email can come from someone else in your organization rather than just the person who is executing the script. I found this extremely valuable when I am the one setting up automation and triggers but I want them to come from specific people other than myself.

It is required that you create a service account with the proper scopes and to put the credentials from the JSON into the script.

Creating Service Account:

To create a service account with domain wide delegation use the following walkthrough https://developers.google.com/identity/protocols/oauth2/service-account#delegatingauthority

  • Required scope to add to Domain-wide delegation:
    • https://www.googleapis.com/auth/gmail.send

Download the JSON credentials to get the private key and service acccount email address to put into the script

Required Libraries:

OAuth2

  1. Go to Resources > Libraries
  2. Add a Library 1B7FSrk5Zi6L1rSxxTDgDEUsPzlukDsi4KGuTMorsTQHhGBzBkMun4iDF with the latest version
  3. Click Save

Example Code:

 var email = {};  
  email.subject = "Test Subject";
  email.recipient = "[email protected]";
  email.htmlbody = "Hello there, this is an example of how to send a <strong> HTML Email </strong>";
  email.sendername="";
  email.sender = "[email protected]";
  email.sendername = "Corey Jansen"
  email.cc="[email protected]";
  sendEmailGmailAPI(email);

Script Located Here: https://github.com/coreyjansen/Google-App-Script-Send-Email-Service-Account

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