How Can I Retrieve Error Messages from PHP's `mail()` Function?

How to Retrieve Error Messages from the PHP mail() Function

The PHP mail() function is a versatile utility for sending emails from your scripts. However, it can be frustrating when emails fail to send without any indication of the error. To resolve this issue, let's explore how to retrieve error messages from mail().

Windows SMTP

For Windows users employing SMTP, you can leverage the error_get_last() function when mail() returns false. Note that this approach is not compatible with PHP's native mail() function.

$success = mail('email@example.com', 'My Subject', $message);
if (!$success) {
    $errorMessage = error_get_last()['message'];
}

Example Output

Calling print_r(error_get_last()) in the case of a failed email might produce the following output:

[type] => 2
[message] => mail(): Failed to connect to mailserver at "x.x.x.x" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set()
[file] => C:\www\X\X.php
[line] => 2

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