The most often requested feature on the Submission Grinder since it’s launch more than four years ago has been support for poetry listings. This support has finally been published. Most importantly the poetry advanced search page you can use to find new poetry markets here.
You can use the site without registering and use the search to find markets. or look at individual markets. If you register you will be able to track your submissions and from market listings search for your poems that fit the requirements that you haven’t submitted to that market before, and so on.