SMTP Authentication Error Gmail - [SOLVED]

More number of websites make use of PHP in order to send email through SMTP. For instance, it is possible to create a custom mail form, or use a WordPress SMTP plugin. If a problem occurs in Google’s security settings, it may not allow you to send mails through SMTP servers. SMTP authentication erro Gmail can be resolved in a way given below.

Method 1: Enabling ‘Less Secure Apps’ within Gmail

  • Step 1:Sign in to the Gmail account on your device.
  • Step 2:Go to the Less Secure Apps page.
  • Step 3:Enable the Allow less secure apps: ON feature.
  • Step 4:Google will start updating this setting.
  • Step 5:Check if the SMTP authentication error issue has been resolved by sending an email from your account.

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