3 ms·Very interesting idea. Drop me a line and let’s discuss: nelewel291@maksap.comby tboyd47 6y agoVery interesting idea. Drop me a line and let’s discuss: nelewel291@maksap.comSI_Rob 6y agoYou might want to google "hashcash," for a little history on PoW and email. It's an idea that goes back before Bitcoin and was one of its influences.amakia 6y agopoyeta8130@majorsww.comamakia 6y agopoyeta8130@majorsww.com