This mechanism, while it might be convenient for some people, looks very noisy for people without mime support.
I'd recommend that there be a new mailing list to support this kind of traffic. Also, there'd need to be some kind of convenient mechanism for developers without intrinsic mime support to generate such messages. And, there's the little matter of synchronizing the transmission of these messages with maintenance of the ftp site -- taken together, I think these would need to be sent out by the ftp site maintainer or some mirror site. Do you think you can put together a simple-to-use tool that wouldn't add to the overhead of the primary ftp site maintainer (who already has lots to do)? -- Raul