A: Hi Fomoling,
Thanks for reaching out. You can absolutely create billing software using Triggre. You can notify your customers directly via e-mail or use Zapier&MessageBird to send out SMS's. You can even add a payment link into your email, so people can pay instantly from the email without logging in or going to your application.

You can even create a scheduled triggre to automatically send cumulative invoices every month, for instance.