I hate mailto - Stop websites from opening your email client.
MailtoUI.js - Enhance your mailto links with a convenient user interface.
mailgo - A more intuitive mail-to alternative
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.