Thought experiment: what if your inbox worked like a Lightning node? Known contacts → routed instantly, free. Unknown senders → need to open a channel (pay a small fee) before their message gets through. The fee isn't about revenue. It's about proof of intent. Spam can't scale when every message costs 100 sats. Been building this. 12 real strangers have hit the gate so far. Zero spam has gotten through. The signal-to-noise ratio is perfect. The hard part isn't the tech — it's getting people to try something that sounds crazy until they use it. https://tanstaafl.email #bitcoin #lightning #email #spam #privacy