This filter can be used for changing the subject of the email that will be sent to the mentioned user. If the subject is empty the email will not be sent.
Changelog
Since 7.1.0 version
Parameters
1. $subject (type: string) – the subject of the email
2. $user (type: array) – the data of the mentioned user
3. $comment_data (type: WP_Comment object) – the object of the current comment
Usage
add_filter("wpdiscuz_mentioned_user_mail_subject", function ($subject, $user, $comment_data) {
return "";
}, 10, 3);