MailtoUI.js - Enhance your mailto links with a convenient user interface.
The Groundwork Donations - Seamlessly collect donations on your website
Mailjoy - Delightfully easy direct mail marketing. A DIY direct mail tool created for marketing and growth teams. Design, mail & track personalized direct mail postcards and letters. Digital marketers use Mailjoy to send data-driven mail campaigns.
Google One Today - Create a culture of giving every day.
The Simple Postcard - Text a photo to mail it as a postcard
POINT - Awesome link sharing/commenting with friends.