Product
How we built it: Smart Retries
![Blog > Smart Retries > Hero image](https://web.archive.org./web/20240208001320im_/https://images.ctfassets.net/fzn2n1nzq965/heCHwpOeQFdC8J13R583H/fa7afdc26e001a366bd243c7bcd19570/smart-retries-hero-image.png?w=1080&q=80 )
In this post, we walk you through the engineering decisions we made that have enabled Smart Retries to recover $9 in revenue for every $1 customers spend on Billing—and the four main lessons we learned throughout the process.