bp_get_member_invitation_message()

function bp_get_member_invitation_message() {
	global $bp;

	$term = get_term_by('name', 'invites-member-invite', bp_get_email_tax_type() );

	$args = array(
		'post_type' => bp_get_email_post_type(),
		'tax_query' => array(
			array(
				'taxonomy' => bp_get_email_tax_type(),
				'field' => 'term_id',
				'terms' => $term->term_id
			)
		)
	);
	$query = new WP_Query( $args );

	$wp_html_emails    = null;
	$is_default_wpmail = null;

	// Has wp_mail() been filtered to send HTML emails?
	if ( is_null( $wp_html_emails ) ) {
		/** This filter is documented in wp-includes/pluggable.php */
		$wp_html_emails = apply_filters( 'wp_mail_content_type', 'text/plain' ) === 'text/html';
	}

	// Since wp_mail() is a pluggable function, has it been re-defined by another plugin?
	if ( is_null( $is_default_wpmail ) ) {
		try {
			$mirror            = new ReflectionFunction( 'wp_mail' );
			$is_default_wpmail = substr( $mirror->getFileName(), -strlen( 'pluggable.php' ) ) === 'pluggable.php';
		} catch ( Exception $e ) {
			$is_default_wpmail = true;
		}
	}

	$must_use_wpmail = apply_filters( 'bp_email_use_wp_mail', $wp_html_emails || ! $is_default_wpmail );

	if ( $must_use_wpmail ) {
		$text =  $query->posts[0]->post_excerpt;
	} else {
		$text =  $query->posts[0]->post_content;
	}

	return apply_filters( 'bp_get_member_invitation_message', stripslashes( $text ) );
}