Filter: replyable/comment_form/opt_in_tooltip_text

This filter lets you customize the text in the tooltip next to the opt-in checkbox on the comment form. Here's an example:

add_action( 'replyable/comment_form/opt_in_tooltip_text', 'my_prefix_change_tooltip' );  

function my_prefix_change_tooltip( $tooltip_text ) {
 	return 'This is custom tooltip text.';
}

Added in Replyable 2.1.3.