B2B SaaS The most mature product in the portfolio

PostHero

Physical letters for European e-commerce

B2B 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

Next.jsMDXTailwindshadcn/uiVercelGoogle Address Validation API

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