answer:Welcome (back) to ask-public. I don’t know the laws about spoofing, but I would reckon that some will be coming along someday, if they don’t exist already. While I’m sure that you don’t intend to defraud or threaten anyone (right?), then as long as the action that you’re taking is not inherently illegal, then the major risk is not a legal one, but a business / reputation issue. That is, people who find out that they’re being spoofed – and it’s not going to be an insignificant number of people – are going to wonder why this is happening. They’ll be apt to regard you as untrustworthy and that reputation is hard to get back. I think you’d be on better ethical / reputational ground (and certainly unassailable from a legal perspective) if you send the email through a more regular route / method, and handle unwanted replies administratively or via filters on your email client. Better to be completely honest and aboveboard – if that’s your intent, anyway – than it would be to sow doubt in the minds of your receivers. Technically, I don’t know how to spoof email addresses; it hasn’t been an interest of mine. I understand that the process isn’t difficult to learn or do, but I’ve had no desire to learn it or do it. It might be an interesting intellectual / technical process to play with, but I’ve got other things that interest me more.