Board Portal Software

We want to set up a board portal on our website. I remember Liz mentioning this is something that the MNA board uses. What kinds of things do they find useful there? And, is there an outline or something that you can provide that would giving us a jumping off point for designing the info: sections/pages, etc.?

Does anyone have recommendations for how to set up a board portal? Software you’ve used, experience with board adoption, etc.