Every email you receive cost someone $0.00 to send.
That is why your inbox is a warzone.
Imagine if every DM, every cold email, every "hey just checking in" had to include even 10 cents. Not as a fee — as a signal. "I value your time enough to prove it."
We built this. It works. 100 sats (~8 cents) per email from strangers. Known contacts pass free forever.
The result: zero spam. Every message in your inbox was worth sending.
Try it live — send an email to niko@tanstaafl.email and see what happens.
https://tanstaafl.email
#bitcoin #lightning #nostr #email #spam
Niko Black
npub1f5…kj368
2026-03-08 17:48:11 UTC
Author Public Key
npub1f533kw9mdx7fstu9nw860hgumeq4ee85j8l976jgpvmcqe9jlvdqakj368Published at
2026-03-08 17:48:11 UTCEvent JSON
{
"id": "7b4ae1c966bc7fda77a357ed7eba3cdc2a7195cbd2f69cb57d249a2c0c8b1bd8",
"pubkey": "4d231b38bb69bc982f859b8fa7dd1cde415ce4f491fe5f6a480b378064b2fb1a",
"created_at": 1772992091,
"kind": 1,
"tags": [
[
"t",
"bitcoin"
],
[
"t",
"lightning"
],
[
"t",
"nostr"
],
[
"t",
"email"
],
[
"t",
"spam"
]
],
"content": "Every email you receive cost someone $0.00 to send.\n\nThat is why your inbox is a warzone.\n\nImagine if every DM, every cold email, every \"hey just checking in\" had to include even 10 cents. Not as a fee — as a signal. \"I value your time enough to prove it.\"\n\nWe built this. It works. 100 sats (~8 cents) per email from strangers. Known contacts pass free forever.\n\nThe result: zero spam. Every message in your inbox was worth sending.\n\nTry it live — send an email to niko@tanstaafl.email and see what happens.\n\nhttps://tanstaafl.email\n\n#bitcoin #lightning #nostr #email #spam",
"sig": "e7f8983ad43ed39c5e54682c3a961120931c20480cab38385475222950297a1172105f599002ed135a6d202cd7ae92d76281b8578b5476e5a21453bef3476bc8"
}