This filter can be used to either send emails to followers or not.
Changelog
since 7.0.0 version
Parameters
1. $sendMail (type: bool) – either send the email to followers or not
2. $followData (type: array) – follow data
3. $comment (type: WP_Comment object) – the object of the comment
Usage
add_filter("wpdiscuz_follow_email_notification", function ($sendMail, $followData, $comment) {
return false;
}, 10, 3);