I have created and sold auto emailer script to number of people already. While my intention is to allow people to send out newsletter easily from their own server, I noticed that some people use it to send out SPAM. Will this get me in trouble later? Anything I can do to avoid these problems? I already stated in the disclaimer that I'll not responsible for any messages that sent out by the mailer, is that suffice? Thanks in advance for all suggestions.
Although I detest SPAM and spammers, your script is no different from any other mailing script. It's not the script that would be the problem but the person who used it to behave illegally. I don't think you have anything to worry about.
Almost any technology in the wrong hands can be criminal, but you aren't the one spamming so you don't have to worry about breaking any laws. There are auto mailer, auto response scripts every where and used within legal parameters, they are all just fine. You would only get in trouble with things like this if the only purpose for the script is criminal activity.
Thanks, that's quite reassuring. I'll make sure to develop the script so its functions are not encourage a spam sender then.