Why it works
It's low-pressure and relationship-first — you're asking a favour, not selling, which people are wired to grant. Most sends get ignored, but firing every few months keeps you top of mind, so when someone does hear "I need a website," your name surfaces. The freshness comes from their reply, not from your email — which is exactly why it works as a static, recurring send.
Make it yours
Fill in what you do in plain language. Every 3–4 months is the sweet spot: frequent enough to be remembered, rare enough that it never feels like spam.