Portfolio
PostHero
Physical letters for European e-commerce
posthero.appB2B SaaS to automate sending physical letters (direct mail), aimed at European e-commerce. A domain with consolidated authority (DA ~41) and ongoing SEO work.
Traffic-generating tools
An address validator and formatter for Spain and Germany lives at posthero.app/tools/, acting as an organic-traffic entry point into the product.
Three-layer validation
- Regex for fast format filtering
- Google Address Validation API for real verification
- An AI fallback when the previous layers can't resolve it
Agent-oriented content
The stack is evolving toward Next.js + MDX + Tailwind + shadcn/ui on Vercel, with content generation designed for agents.
Stack