We sent unsolicited emails to as many addresses as we could (manually) find online over a week or two. We're in a B2B niche so it wasn't hard to find directories online. Never used any bulk email tool, just copied and pasted.
This was 6ish years ago. I wasn't aware of spam laws at the time. I wouldn't recommend it but it worked.
This was 6ish years ago. I wasn't aware of spam laws at the time. I wouldn't recommend it but it worked.