How does the SMTP implementation of mail() differ on Windows compared to the sendmail implementation?

When using the mail() function in PHP on Windows, the default implementation is SMTP, while on Unix-based systems like Linux, the default implementation is sendmail. To switch the implementation to sendmail on Windows, you need to modify the php.ini file to specify the sendmail path and configuration. This allows you to use sendmail instead of SMTP for sending emails in PHP on Windows.

// Update the php.ini file to specify the sendmail path and configuration
ini_set("SMTP", "your_sendmail_path_here");
ini_set("smtp_port", "your_smtp_port_here");

// Now you can use the mail() function with sendmail implementation on Windows
mail("recipient@example.com", "Subject", "Message");