New installation here with PHP 8.2, tried to make email working by installing swiftmail but it is not supported on the recent versions of PHP and was discontinued.

Suggestion to update the email lib for this one that is used by many PHP projects: https://github.com/PHPMailer/PHPMailer

Changes should be transparent and expected to be only on https://github.com/emoncms/emoncms/blob/master/Lib/email.php