Resolve outgoing mail errors in Vtiger CRM 8.3 when using Gmail. Fully compliant with the latest Google OAuth2 requirements.
Struggling to connect Gmail as your outgoing server in Vtiger CRM version – 8.3?
We provide a secure, reliable fix to get your Gmail Outgoing Server working—fast.
Problem
After recent updates in Vtiger 8.3 and Gmail’s stricter OAuth policies, many users face this error when setting Gmail as the outgoing server:
- When trying to setup Outgoing server, you are getting an error displayed : Please copy config.oauth2-sample.php to config.outh2.php and update
- Once you fix the issue – Still Not able to pass gmail authentication?
❌ SMTP authentication failed- ❌ Unable to connect to smtp.gmail.com ?
- ❌ App access blocked by Google ?
- Once you fix all – Still outgoing server set as blank?
Our Solution – Only $99
We’ll configure your Gmail SMTP Outgoing Server for Vtiger CRM version – 8.3 with:
- ✅ Secure OAuth 2.0 authentication with proper App setup
- Works with both Google Workspace or Personal gmail account.
- ✅ Verified Gmail account integration
- ✅ Tested outgoing email delivery (send test mail confirmation)
- ✅ 100% upgrade-safe – follows Vtiger coding standards
- ✅ No plugin or third-party tool required
- ✅ Completed within 1 business day
Flat fee: $99 USD – one-time setup, no hidden costs.
🛡️ Why Trust Us?
- 13+ years of expertise in Vtiger CRM development
- Follows 100% Vtiger coding standards – no core file changes
- Clean and secure implementation
- Guaranteed not to break during future Vtiger upgrades
- 100% working guarantee or your money back
- Ongoing support available
🎥 Want to See It in Action?
Check Out the Demo » – See how Gmail works as an outgoing server inside Vtiger 8.3 after setup.
Watch the Video
📬 Ready to Send Emails Again?
Fix My Vtiger 8.3 Outgoing Server SMTP with Gmail – Contact Us »