To use Gmail as your SMTP server, first, you need to turn on the “Access for less secure apps” setting within your Gmail account. This allows external systems (such as Campus 365) to interface with your account. To learn more and change this setting, go to google.com/settings/security/lesssecureapps.
If you see a notice that 2-Step Verification is turned on and can’t use this setting, you need to generate an app-specific password to integrate with Campus 365. Do so by going to security.google.com/settings/security/apppasswords.
Once you do whichever step is relevant to your Gmail account, fill in the Email Domain fields with:
  • Email Engine: SMTP
  • SMTP Username: Gmail Email Address (The address you want these emails to come from)
  • SMTP Password: Gmail Account Password
  • SMTP Server: smtp.gmail.com
  • SMTP Port: 587
  • SMTP Type: SSL
Test SMTP Settings
Potential Problem with Free Email Providers and Alternate From Addresses
To test the email settings, navigate to ERP > Communication > Send Email. Select the user from the Email To section to send a test email using the custom SMTP settings.
Note:  Depending on your service provider, it would be advised that you remove the restriction of sending emails from an unauthenticated sender. Please contact your SMTP provider to ensure this can be done.
Many free email providers (such as Gmail, Hotmail, and Yahoo) disallow using alternate from addresses, as a way to prevent fraudulent activity. This issue also exists for domains using Google Apps for email. 
With an SMTP service provider account (often as part of paid web hosting), you can create email accounts on that SMTP server and customize them from addresses directly.