How about email? Form runs on your (anything) -> creates a new email -> you get instant email notifications because it's an email. That's also perfect for MVPs, landing pages, portfolios or any low-volume use case. Why would I want to rely on a middleman or version control software for this?
If you know it's a glued-together solution that you'll have to rip apart if your program scales, why make it so complex in the first place?
If you know it's a glued-together solution that you'll have to rip apart if your program scales, why make it so complex in the first place?