Are there any specific PHP functions within Joomla that can be utilized for sending emails, or is it necessary to create a custom email function?

To send emails in Joomla, you can utilize the Joomla API function `JFactory::getMailer()` which provides a convenient way to send emails without the need to create a custom email function. This function allows you to set the email sender, recipient, subject, body, and other email parameters easily within your Joomla component or module.

// Load Joomla's mail library
$mailer = JFactory::getMailer();

// Set sender
$mailer->setSender(array('your_email@example.com', 'Your Name'));

// Set recipient
$mailer->addRecipient('recipient@example.com');

// Set subject
$mailer->setSubject('Subject of the email');

// Set body
$mailer->setBody('Body of the email');

// Send email
$sent = $mailer->Send();

if ($sent !== true) {
    // Email not sent, handle error
}