I suspect there are still a few users out there that consider receiving four emails in exchange for a free month of a $50/month product to be a fair exchange.

I suspect there are still a few users out there that consider receiving four emails in exchange for a free month of a $50/month product to be a fair exchange. Or at least not unfair enough to get this upset about. Over the years, I imagine I must have sent out something like twenty thousand of those mails for S3stat alone. Some people do indeed click the Unsubscribe link on those mails. I've never had anybody complain that they were "spam" though, since "hey, I hope you're enjoying the service, let me know if you have any questions!" doesn't really trip too many people's rage filter. Apologies if you've signed up for our trial and I sent you a thanks message. I didn't mean anything by it.