https://motopress.com/products/hotel-booking-invoices/

This extension allows you to automatically email invoices as PDFs to your guests. You can easily customize invoice templates and automatically send them to your guests based on their booking and payment details. A PDF invoice includes property, services, taxes, and fees charges. The addon enables you to send invoices as an email attachment to the confirmed bookings as well as view, download, or print them at any time from your admin dashboard.

Changelog

* Fixed an issue with displaying certain currency symbols in invoices.