Batch sending and ‘mg_use_recipient_vars_syntax’

Hi, we are switching our WordPress site to use MailGun in the near future, and we want to use the “Batch sending” feature. I understand that we have to implement the mg_use_recipient_vars_syntax filter for this.

Question: is the below ‘minimal’ implementation (e.g. in functions.php) sufficient for this ($recipients being a list of email addresses)?

add_filter( 'mg_use_recipient_vars_syntax', function( $recipients ) { return true; } );