Thanks! Other answers please? I just want to know how many people open the newsletter... I found a tool here: http://www.aweber.com/email-analytics.htm but it's not free and I don't need all those features...
How are you currently sending out your newsletter? Do you use Aweber or something similar? If you use a script or something, maybe you can find a free script that will do this for you. As far as I know there's no free method of finding out who opens your emails.
You have their e-mail addresses, don't ya? Well, ask them questions for that kind of info. Not that all of them will reply back, but many will.