Well... imagine someone creates an event for a mail art call.
And that I have more than one idea and end up creating more than one artwork.
Do you think correct to mail one to the "EVENT CALLER" and the rest to some other participant of such event? Or even another person whatsoever?
Unless there is a limit stated by the mail art call, I'd send as many as you like.
k... so i might send them in separate envelopes... it might be cool for the receiver/caller