Thank you for the post. We don't currently have a defect plugin for Jama Software, but you can generally use TestRail's generic URL-based integration:
That said, we are definitely looking into adding more defect plugins for additional tools like Jama Software in future releases of TestRail. I cannot promise that we will be working on a defect plugin for Jama Software soon, but I've added it to our list of tools to look into. It's generally also possible to write a simple custom defect plugin yourself if you are interested in this (and you can just use one of our existing ones as a starting point and adjust it to your tool's API) in the meantime if you are using TestRail Server. We also have documentation about this available on our website here:
I hope this helps. Just let me know in case there's anything else I can help with in the meantime.