Invalid Second Factor error sending email through Gmail

Fixing "Invalid Second Factor" Error When Sending Email Through Gmail

If you're getting an "Invalid Second Factor" error when sending email through Gmail, you'll need to switch to using the special Gmail server. Here's how:
  1. Update Email Server Settings:
    • Go into your email settings.
    • Change the SMTP server to smtp.gmail.com.
  2. Use Your Gmail Account:
    • Enter your Gmail email address and password.
  3. Enable Advanced Settings:
    • Check Use Advanced Settings to set SMTP Server Port.
    • Set the SMTP Server Port to 587.
    • Check SMTP Server requires SSL and/or TLS Mode.
    • Set SMTP SSL/TLS Start Mode to Automatic.
  4. Generate an App Password (if needed):
    • If you have two-factor authentication enabled on your Gmail account, you'll need to generate an app password.
    • Go to your Google Account > Security > App Passwords.
    • Generate a new app password specifically for your email application.
    • Use this app password in place of your regular Gmail password in the email settings.
These steps should resolve the "Invalid Second Factor" error and allow you to send emails through Gmail without issues.