Google Charts - Interactive charts for browsers and mobile devices.
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
Highcharts - A charting library written in pure JavaScript, offering an easy way of adding interactive charts to your web site or web application
Mailman 3 - Dedicated Mailman 3 installation. Unlimited lists/configuration. Free subdomain at mailman3.com. Dedicated support for list admins.
ZoomCharts - Creating meaningful and aesthetically pleasing data visualizations and incorporating them into your projects is easy with the tools offered by ZoomCharts.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.