For the last two years, I have been focused on helping PG&E get a new website that is accessible and meets WCAG Level A and Level AA guidelines, with some additional guidelines from Level AAA. We've outsourced the redesign to Sapient, so my role has been more around writing user experience and accessibility requirements, working with the vendor, providing feedback on designs, and raising issues.
Below is the accesssible guide to Accessible Email. If you are looking for a pdf, you can find one here.