Hashcash fixes this?

Alas, that ship has long sailed.

nostr:nprofile1qqs0w2xeumnsfq6cuuynpaw2vjcfwacdnzwvmp59flnp3mdfez3czpspz9mhxue69uhkummnw3ezuamfdejj76l8lp0 has a good blog on this. 

 I used to add these to my email but gmail doesn’t look at them 

 Useful tool:

https://easydmarc.com/ 

 Hashcash is still the answer to email spam. Gmail is a second order problem.