Invoice Quick is a super flexible invoice tool that allows me to send beautiful & customizable email notifications to my customers. Its integration with PayPal is AWESOME!

5 tacos with no doubts.

Some suggestions,
1) Email customization has some bugs, for example, I use [total_amount] in the customizing page, it still shows "[total_amount]" in the email instead of the exact amount. This bug also applies to some other buttons like [amount_due], [number] etc.
2) UI can still be more beautiful haha~

I hope InvoiceQuick can become better and better in the future though it's already very awesome lol~

All the best,
Future