accessiBe - Making websites accessible to people with disabilities
GMass - GMass allows you to easily schedule emails, send out mass emails and mail merge campaigns and more with Gmail! Click here to learn about more features!
tota11y - An accessibility visualization toolkit from Khan Academy
Elevatr Email Marketing Automation - Fast and easy email marketing software
Page Speaker - Modern web accessibility tools for agencies & webmasters
Google Sheets Email Marketing - Email automation and validations directly from Google Sheets