Is Constant Contact's back end screen-reader (508) compliant?

I'm in the process of hiring an administrative support role for my department, and my top candidate is blind and uses a screen reader. Will the Constant Contact software navigation work with screen reader technology (JAWS, NVDA, etc.)? Also, I found a message stating that CC emails don't use tags to indicate what are hearders vs. bodytext. This was from 2020. Has this been addressed? Thanks for any help you can offer.