Here's how to integrate your OptiMonk account on your Volusion site.
1. Login to your Volusion Admin Control Panel.
2. Go to Marketing > SEO page
3. With the Default Values tab selected, paste the OptiMonk code snippet into the Globally Appended Meta Tags field
Congratulations, you're all set! Please note, if you would like to use cart segmentation with Volusion, then you have to develop it. More information here.