[Gigachad]

This reminds me of how bitmessage works. You'd not know if a message was for you without trying to decrypt it so you just attempt to decrypt every message. They reduced the burden by using "streams" where your address might be on "stream 7" and everyone could tell a message was for stream 7 but not who for on that stream. So you'd only have to decrypt everything on the stream your address is on. With the more users being on a stream, the more anonymous it is but the more network and cpu work it is.