As journals and publishers create new open access policies, some bad actors have created journals that sound similar to high-impact journals, but are meant to trick authors into paying open access fees for a truly low-impact journal. Resources such as Think, Check, Submit give guidelines for avoiding journals and publishers engaged in predatory practices.
In general you should never pay a publisher to consider your work, much less reprint your work. (Some publishers charge authors for various services *after* accepting an article, but that is a different situation.) If you are uncertain whether a solicitation is legitimate, please contact email@example.com for assistance.
To learn more about Institutional Repositories such as the UWM Digital Commons, please visit the system's research page.