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This section walks through setting up the Gmail connector using a Service Account. More info on Service Accounts can be found here. A Google Workspace is required. If you’d rather use an individuals account + OAuth to access Gmail, checkout the section here.

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Authorization

1

Create Google Cloud Project

2

Enable Gmail API and Admin SDK

  • On the left panel, open APIs & services
  • Go to Enabled APIs and services
  • On the top click +ENABLE APIS AND SERVICES
  • Search for Gmail API and click ENABLE
  • Alternatively visit this link, select your project and enable the Gmail API
  • Also enable Admin SDK API (search and enable)
Google Cloud Console enabling Gmail and Admin SDK APIs
3

Create Service Account

  • Go to the Service Account management page in Google Cloud.
  • Click Create Service Account button and fill out the fields in step 1. You can ignore steps 2 and 3.
  • Go to the Keys section, and click Add Key. Download this key, you will need to upload it to Onyx later.
Note for Google Organizations created after April 2024:
  • To give the service account the proper permissions you will have to navigate to this link
  • Then select Manage, select Override parent's policy and then select Not enforced under Rules.
  • Finally, select SET POLICY
4

Grant domain-wide delegation

Give this Service Account read-only access to Gmail
  • Copy the Unique ID of the Service Account
  • Go to the Domain-wide Delegation page in the Google Admin Console.
  • Click Add new, fill in the client ID with the Unique ID of the Service account
  • Copy this comma separated list of scopes and paste it into field OAuth scopes: https://www.googleapis.com/auth/gmail.readonly,https://www.googleapis.com/auth/admin.directory.group.readonly,https://www.googleapis.com/auth/admin.directory.user.readonly
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