How to Connect via App Password (Recommended)
To ensure a stable connection for your warm-up campaigns, we recommend connecting your Gmail or Google Workspace account using an App Password. This bypasses the stability issues sometimes found with OAuth.
Prerequisites
Before you begin, ensure that 2-Step Verification is enabled on your Google Account. Google will not allow you to create an App Password without it.
Step 1: Access Google Security Settings
Log in to your Google Account and navigate to the Security tab on the left-hand sidebar.
Step 2: Navigate to App Passwords
Click on 2-Step Verification. Scroll to the very bottom of that page and click on App Passwords.
💡 Note: If you cannot find this option, use the search bar at the top of your Google Account page and type "App Passwords."
Step 3: Generate the Password
Under App name, enter a custom name so you recognize it later (e.g., "Warmbox").
Click Create.
Step 4: Copy your unique code
A pop-up will appear with a 16-character code in a yellow box.
Copy this code immediately. * You do not need to memorize it, and you won't see it again once you close the window.
Step 5: Finalize the Warmbox Connection
Return to Warmbox and follow these steps:
In the Inbox tab, click Add new inbox.
Select Gmail - Gsuite and click Next.
Choose the Credentials option.
Enter your full email address, but paste the 16-character App Password into the password field instead of your regular Gmail password.
⚠️ Why we recommend this over OAuth ⚠️
While "Sign in with Google" (OAuth) is faster, Google often triggers security refreshes that can pause your warm-up campaigns unexpectedly. Using an App Password provides a dedicated "tunnel" for Warmbox, ensuring your emails keep sending without interruption.