The name evades me, but this was a thing a few years back. IIRC, it was the equivalent of what a stamp for an envelope would cost, and the recipient got a chunk, as did the service provider. Will try and find the name for you, but AFAIK, it's no longer doing business.
Alas not! Much more recent, had a very polished of-its-era SaaS style website. IIRC, you might have even been given a specific email address for it, which then forwarded to your chosen personal address.