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Whitelisting Vtiger to Configure Gmail Inbox

After Google announced that whitelisting third-party apps is a mandate, here are the steps to whitelist Vtiger as a trusted app to continue using Gmail Inbox 2-way sync.
21 Nov, 2023 - Updated 8 months ago
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Whitelisting in Vtiger CRM adds specific email addresses or domains to approved senders.

Whitelisting ensures that essential emails from clients, customers, partners, or other trusted sources are not mistakenly flagged as spam or blocked by email filters. This is especially crucial for maintaining effective communication and preventing missing important messages.

From 6th January 2020 onwards, configuring Gmail Inbox 2-way sync with Vtiger will be unavailable if you have not Whitelisted Vtiger as a trusted app.

Click here to read about Whitelisting.

Why do you need to Whitelist Vtiger on G Suite

Whitelisting Vtiger CRM on G Suite (now known as Google Workspace) can be important to ensure that emails sent from the CRM system are delivered reliably to recipients' inboxes without being marked as spam or blocked by email filters. This is particularly relevant for businesses that use Vtiger CRM to manage customer communications, sales processes, and other interactions via email.

What is Gmail Inbox 2-way sync​​​​​​

The Gmail Inbox 2-way sync feature in Vtiger allows you to sync your emails from Google to Vtiger and vice-versa. This way, you can access your conversations in both Vtiger and Gmail. Also, emails coming to your Gmail ID will automatically be attached to CRM records when you enable Gmail 2-way sync. 

Notification from Google

Google will notify you through an email similar to this:


Feature Availability

The Whitelisting feature is available in all editions of Vtiger CRM.


The following are the benefits of Whitelisting:

  • Reliable Email Delivery-  Whitelisting ensures that emails sent from Vtiger CRM are consistently delivered to recipients' inboxes. This is especially important for critical communications such as sales proposals, customer support responses, and updates.
  • Avoiding Spam Filters- By whitelisting Vtiger CRM, you can prevent legitimate emails from being caught by spam filters or marked as spam. This reduces the risk of important communications being missed or delayed.
  • Enhanced Customer Engagement- Whitelisting allows you to communicate effectively with customers and clients. This leads to better customer engagement and satisfaction.

In this article, you will learn about:

  • Creating a new app
  • Managing multiple third-party services
  • Changing access to third-party app​​​​​​

Key Terminology


Key Term



Whitelisting is the practice of designating certain entities, such as email addresses, domains, IP addresses, or applications, as trusted and authorized to interact with a system, network, or platform.

G Suite

G Suite, now known as Google Workspace, is a collection of cloud-based productivity and collaboration tools developed by Google. This includes Gmail, Google Drive, Google Docs, Google Slides, Google Calendar, Google Chat, Google Meet, etc.

Gmail Inbox 2-way-sync

Gmail Inbox 2-way sync synchronizes emails, labels, and other data between your Gmail account and another email client or application.


Spam filters, also known as email filters or junk filters, are software mechanisms designed to automatically identify and categorize unsolicited, unwanted, or potentially harmful emails as spam.

Adding a New App

You can log in from your Gmail account using your Admin credentials.

Follow these steps to add a new app:

  1. Log in to your Google Admin console.
  1. Go to Security.
  2. Go to  Access and Data Control> API Controls from the Admin console homepage.
  3. Click Manage Third-Party App Access.
  1. Click Add app
  2. Click OAuth App Name Or Client ID. The Configure an OAuth app window opens. Enter information for the following in the App tab:
  1. Enter the client ID 356713861711-tuh6umqu686ptigej7362mvrutbgf261.apps.googleusercontent.com
  2. Click Search. The app name appears in the App name field.
  3. Click Select. You will be taken to the OAuth client IDs tab.
  4. Enable the checkbox for OAuth Client ID. You will be directed to the Scope tab. 
  5. Select the users whom you want to configure access for.
  6. Click Continue. You will be directed to the Access to Google Data tab.
  7. Click the Trusted option for Access to Google Data.
  8. Click Continue.
  9. Click Finish.

The new app will now be verified and shown in green. 

Managing Multiple Third-party Services 

This is useful if you want to manage any third-party service.

Follow these steps to manage multiple third-party services:

  1. Log in to your Google Admin console.
  2. Go to Security. 
  3. Go to Access and Data Control.
  4. Go to API Controls from the Admin console homepage.
  1. Click Manage Google Services under App access control. The App Access Control window opens.
  1. Select Add a filter to filter this list. Select from the following criteria:
    1. Google services - Select from the list of services, such as Drive or Gmail, and click Apply.
    2. Google services access - Select Unrestricted or Restricted and click Apply.
    3. Accessed apps - Specify a range for the number of accessed apps and click Apply.
    4. Users - Specify a range for the number of users and click Apply.

Changing access to your Third-party app

You can change the access to your third-party app from Trusted to Limited or Blocked. This is done to give flexibility in access to third-party apps. Access can be chosen based on your preferences.

Follow these steps to change the access:

  1. Log in to your Google Admin console.
  2. Go to Security > Access and Data Control> API Controls from the admin console homepage.
  3. Select Manage Third-party Access. The App Access Control window opens.
  1. Click Change Access. You are taken to the Scope tab.
  1. Select the users who you want to configure access for.
  2. Click Next. You will be taken to the Access to Google Data tab.
  1. Select Access to Google Data.
  2. Enable the radio button. 
  1. Review the information you have added or modified so far.
  2. Click Change Access.


  • This configuration is only compatible with Gsuite users and cannot be applied to other public (free) Gmail accounts.
  • If you change the status of an app from trusted to limited and it has no active users, it will disappear from the list. You must add it again, or a user must activate it.

To learn more about the whitelisting process, click here.

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