Use woocommerce email template header/footer with your plugin

woo-email.php

	public function gens_send_email($user_id,$coupon_code) {

		if ( !$user_id || !$coupon_code) {
			return false;
		}

		global $woocommerce;
		$mailer = $woocommerce->mailer();

		$user_info = get_userdata($user_id);
		$user_email = $user_info->user_email;
		$user_message = get_option( 'gens_raf_email_message' );
		ob_start();
		wc_get_template( 'emails/email-header.php', array( 'email_heading' => 'You refered someone!' ) );
		echo str_replace( '{{code}}', $coupon_code, $user_message );
		wc_get_template( 'emails/email-footer.php' );
		$message = ob_get_clean();
		$subject = get_option( 'gens_raf_email_subject' );
		// Debug wp_die($user_email);
		$mailer->send( $user_email, $subject, $message);
		return true;
	}