Could not instantiate mail function php 7 phpmailer

A classic issue!

The error "Could not instantiate mail function" in PHP 7 with PHPMailer is usually caused by a missing or incorrect configuration of the mail function.

Here are some common solutions to resolve this issue:

Check your PHPMailer configuration: Make sure you have correctly configured PHPMailer in your PHP script. You can do this by checking the PHPMailer class and its properties, such as isSMTP(), Host, Port, Username, and Password.
Verify your mail settings: Ensure that your mail settings are correct. You can do this by checking your email provider's settings or consulting their documentation.
Check your PHP version: PHPMailer is compatible with PHP 5.3 and later versions. If you're using an earlier version, you may need to upgrade.
Check your PHPMailer version: Ensure that you're using a compatible version of PHPMailer. You can check the version by running echo PHPMailer::VERSION; in your PHP script.
Check your mail function: Make sure that the mail() function is enabled in your PHP configuration. You can do this by checking your php.ini file or running phpinfo() in your PHP script.
Check for conflicts with other libraries: If you're using other libraries or frameworks that also use the mail() function, it may cause conflicts. Try disabling or removing these libraries to see if the issue persists.
Try a different mail transport: If you're using the SMTP transport, try switching to sendmail or mail transport to see if the issue persists.
Check for PHPMailer dependencies: PHPMailer requires the phpmailer/PHPMailer package to be installed. Make sure you have installed it correctly.

Here's an example of a basic PHPMailer configuration:

<?php
require_once 'PHPMailer/PHPMailer.php';
require_once 'PHPMailer/SMTP.php';

$mail = new PHPMailer\PHPMailer\PHPMailer();

$mail->isSMTP();
$mail->Host = 'smtp.example.com';
$mail->Port = 587;
$mail->SMTPAuth = true;
$mail->Username = '[email protected]';
$mail->Password = 'your_password';

$mail->setFrom('[email protected]', 'Your Name');
$mail->addAddress('[email protected]', 'Recipient Name');

$mail->Subject = 'Test email';
$mail->Body = 'This is a test email';

if (!$mail->send()) {
    echo 'Error: '. $mail->ErrorInfo;
} else {
    echo 'Email sent successfully!';
}

If none of these solutions work, please provide more details about your PHPMailer configuration, PHP version, and mail settings, and I'll be happy to help you troubleshoot the issue.

Mail Knowledge

Could not instantiate mail function php 7 phpmailer