Over the last month, I've been working on a small tool to calculate the ROI of my email campaigns.

The tool is quite simple; Insert Send volume, campaign's cost, open rate, click-through rate, conversion rate and Average value of a conversion, and see what your ROI is.

Now the calculator is ready, I'd like to share it with you guys. It's 100% free and you don't have to give any kind of information. Any feedback in this thread would be nice, though.

Email Marketing ROI Calculator

I hope this isn't a violation of the rules. Otherwise, let me know, and I'll remove the link.