Why Isn\'t My PHP mail() Function Sending Emails?

Troubleshooting PHP Mail Function Malfunction

The PHP mail() function is designed to facilitate email sending, but sometimes users encounter issues with its operation. For those who are getting a success message yet notice that emails aren't actually being sent, here's a closer look at potential solutions.

Missing Sendmail Dependency

On Ubuntu systems, it's crucial to ensure that sendmail exists in /usr/sbin/sendmail. If it's not present, you can install sendmail using the following terminal command:

sudo apt-get install sendmail

Once sendmail is installed, reload the PHP page where mail() is utilized. This should resolve the issue.

Spam Folder Examination

In some cases, emails might be getting delivered but ending up in the recipient's spam folder. It's recommended to check the spam folder thoroughly to locate missing messages.

Additional Considerations

If these steps fail to solve the problem, here are some additional aspects to consider:

• PHP Version: Make sure you're using a supported PHP version. Check your server's documentation or PHP's official website for compatibility information.
• Server Configuration: Certain server configurations may require additional setup to enable mail() functionality. Consult your hosting provider or system administrator for guidance.
• Other SMTP Servers: If all else fails, you can configure PHP to utilize an external SMTP server for email delivery.

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