How can one troubleshoot and debug issues related to the mail() function not sending emails in PHP, especially when there are no error messages displayed?

The issue of the mail() function not sending emails in PHP without displaying error messages can be troubleshooted by checking the configuration of the mail server, ensuring that the email headers are correctly formatted, and verifying that the recipient's email address is valid. Additionally, checking the spam folder of the recipient's email account and enabling error reporting in PHP can help identify any underlying issues. 

// Enable error reporting to display any potential errors
error_reporting(E_ALL);
ini_set('display_errors', 1);

// Check the configuration of the mail server
// Ensure that the email headers are correctly formatted
// Verify that the recipient's email address is valid
// Check the spam folder of the recipient's email account

Keywords

mail function debugging troubleshooting error messages SMTP server

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