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Overview

If your organisation uses Google Workspace (formerly G Suite) — for example yourname@yourcompany.com — you can connect it to CardClan using 1-click OAuth. Cards will be sent directly from your business email address.
This uses Google’s secure OAuth 2.0 flow. CardClan never stores your password — only an encrypted access token.

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Prerequisites

Before connecting, make sure:
  • You have a Google Workspace account (e.g. yourname@yourcompany.com)
  • Your Google Workspace Admin has not restricted third-party OAuth app access
  • Pop-ups are allowed in your browser for CardClan
If your Google Workspace organisation has restricted third-party app access, your admin must first approve CardClan. See the section below: Google Workspace Admin Configuration.

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Step 1: Go to Email Settings

  1. Log in to CardClan
  2. Go to Settings → Email Accounts

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Step 2: Connect Your Google Workspace Account

  1. Scroll to the One-Click OAuth Connections section
  2. Click Connect Google
  3. In the popup, sign in with your Google Workspace email (e.g. yourname@yourcompany.com)
  4. Review the requested permissions and click Allow
CardClan requests the https://mail.google.com/ scope. This is required by Gmail’s SMTP OAuth2 protocol to send emails on your behalf. CardClan only uses this to send cards — it does not read, delete, or modify your emails.

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Step 3: Confirm the Connection

The popup closes automatically and your Google Workspace email appears under Connected OAuth Accounts with a Google badge.

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Step 4: Send a Card

All cards you send will now use your Google Workspace email as the From address automatically — for both instant and scheduled sends.

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Google Workspace Admin Configuration

If your organisation restricts third-party OAuth apps, your Google Workspace Admin must approve CardClan.

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How to approve CardClan as an Admin:

  1. Sign in to Google Admin Console with an admin account
  2. Go to Security → API controls → Manage third-party app access
  3. Click Add app → OAuth App Name or Client ID
  4. Search for CardClan or enter the Client ID provided by your CardClan admin
  5. Select the app and set access to Trusted
  6. Click Configure
Once approved, users in your organisation can connect their Google Workspace accounts to CardClan.

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Disconnecting

  1. Go to Settings → Email Accounts
  2. Find your account under Connected OAuth Accounts
  3. Click Disconnect
Cards will fall back to the default CardClan sending address.

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Troubleshooting

Your Google Workspace admin needs to approve CardClan as a trusted third-party app. Share the Google Workspace Admin Configuration section above with your IT admin.
Allow pop-ups for CardClan in your browser. In Chrome: address bar → lock icon → Site settings → Pop-ups → Allow.
Disconnect and reconnect your account to issue a fresh token. Contact support if the issue continues.
Contact us if you need help or have questions.