I'm fine with AUTH and/or PAY for these kind of messages.
:pointright: Inbox relay solution that I can set a price tag on for npubs that I don't have in my network / white list / ....
Discussion
publication fees are too complex and non-standard. but a auth would work.
True. Probably the easiest is to AUTH and then have an auto-send invoice (in a Nip-17 mail) when your not in my network.
or maybe this:
nostr:nprofile1qqsyvrp9u6p0mfur9dfdru3d853tx9mdjuhkphxuxgfwmryja7zsvhqpzamhxue69uhhv6t5daezumn0wd68yvfwvdhk6tcpz9mhxue69uhkummnw3ezuamfdejj7qgwwaehxw309ahx7uewd3hkctcscpyug s realy notice message may do the same as well.