Hi, I'm doing some promotion for a friend who does web design for commission, and I have managed to compile a list of over 20k small business email addresses that have outdated websites, and might be looking for an upgrade. I'm having some trouble getting my head around the specifics of emailing though, would emailing the whole 20k list be regarded as spam? I don't want to do anything massively illegal. Another issue I suspect I will run into is my email being blocked by spam filters. I was going to use a gmail account and a mailmerge script to send out the emails. Should I blast them all at once or send out 500 a day? 50 a day? Is there any better way to send emails for free / cheap apart from gmail? Any advice you may have on this subject is appreciated, I can't seem to find much information on it anywhere else.