[Refer A Friend] Dynamic email from name for referral invites, personalize with the advocate's name

functions.php

<?php

add_filter('automatewoo/referrals/invite_email/mailer', 'my_filter_referrals_invite_email', 10, 2 );

/**
 * @param AW_Mailer $mailer
 * @param AW_Referrals_Referral_Invite_Email $invite
 * @return AW_Mailer
 */
function my_filter_referrals_invite_email( $mailer, $invite ) {

	$advocate_name = $invite->advocate->get_name();

	// OR use the advocate's first name only
	// $advocate_name = $invite->advocate->get_first_name();

	if ( $advocate_name ) {
		$mailer->from_name = sprintf( __( '%s via %s', 'my-text-domain' ), $advocate_name, $mailer->from_name );
	}

	return $mailer;
}