As of August 2022, Gmail has required stronger security to use their Gmail for email notifications.  

  1. First, go to the Gmail account and select "Manage your Google account" from the upper right corner
  2. Go to the Security tab/Security setting
  3. Go to the "Signing in to Google" and set 2-step verification to ON. If 2-step is not turned on for your Gmail organization an administrator will have to turn it on depicted in the 2nd screenshot. The first screenshot depicts the user level encountered if your site admin has already enabled 2-step verification for your organization. 
  4. Goto Signing in to Google and set an App password
  5. Type the name for the application, like "NX2 email" and generate a password
  6. Copy the newly generated password
  7. Go to the NX2 or ZX GUI -> System Settings -> Administration -> E-mail notificationsand set all perspective information and test it
    1. SMTP e-mail account = type Gmail address e.g.
    2. Use Authentication = you must check this on
    3. Account name = type Gmail address e.g.
    4. Password = paste the generated password from above
    5. SMTP server name or IP address = "" 
    6. SMTP port number = 587
    7. Encryption = you must check this on
    8. Set recipient email address
    9. Send test message
    10. Select Notification types

Below is how a fully tested email notification looks after success

Gmail (both public and business) has a number of security-mitigating default settings that must be modified if it is to be used with external mail applications, such as server email alerts.

Enable Less Secure Apps

When accessing Gmail through a web browser, Google will examine metadata about your session (if you've logged in from the IP address before, for example) to determine if the login is possibly malicious, and then choose to present the user with additional security questions or measures. As these measures are impossible for non-browser logins, this protection must be explicitly disabled.

Create an "App Password" (if using MFA)

If your Google account is using multi-factor authentication (MFA) via something like SMS text messages or the Google Authenticator app, you need to create an "app password" for all non-web uses of your Gmail account.

Enable IMAP (optional)

If the server is to try and retrieve any mail via IMAP, rather than just sending via SMTP, you'll also need to enable IMAP in your Gmail settings. This is not required when you are only looking to send alerts.