FourTwenty Email Service

FourTwenty Email Service

Secure API for forms with recipient-bound keys & geoblocking

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A specialized email API for contact forms with unique security features. Each API key is bound to a specific recipient, making it safer for client-side code. Includes custom rate limiting, geoblocking, and an official NPM package with advanced features.
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Launch tags:Email•API•Developer Tools
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Anima - OnBrand Vibe Coding
Design-aware AI for modern product teams.
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FourTwentyDev
Maker
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I discovered FourTwenty Email Service while looking for a secure way to implement contact forms in static sites and SPAs. What makes it unique is how each API key is bound to a specific recipient email address, making it much safer to use in client-side code. The geoblocking and custom rate limiting features are perfect for protecting forms from spam. They also just released an NPM package that makes integration even easier! What contact form solutions are you currently using in your projects? Have you faced security challenges with client-side implementations?