How to Resolve \'Could Not Instantiate Mail Function\' Error When Using PHPmailer?

Error: "Could Not Instantiate Mail Function" When Using PHPmailer

When attempting to use PHPmailer, developers may encounter the error message "Mailer Error: Could not instantiate mail function." This issue arises when the PHP mail() function cannot be used or is improperly configured.

To resolve this error, consider the following:

Firstly, the code provided does not specify the method by which PHPmailer will send emails. By default, PHPmailer utilizes the PHP mail() function. However, it is recommended to use SMTP, which provides enhanced security and delivery reliability.

<code class="php">$mail->IsSMTP();
$mail->Host = "smtp.example.com";

// Optional: SMTP authentication
$mail->SMTPAuth = true;
$mail->Username = 'smtp_username';
$mail->Password = 'smtp_password';</code>

Set the SMTP hostname, optionally provide credentials if your SMTP server requires authentication, and ensure that the necessary ports are open on the server.

If the issue persists, verify that PHPmailer is properly installed on your system and that the PHP version is compatible. Consult the PHPmailer documentation for specific requirements.

Additionally, double-check the value of the $address variable to ensure that it contains a valid email address.

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