Flow-e is a visualization layer on top of your Gmail or Outlook inbox. It provides an elegant Kanban-like workflow that's combined with the ideas behind Inbox Zero and GTD. Flow-e eliminates the need of external task management tools and transforms your inbox into a central To Do app.
Handwrytten - Handwritten notes straight from your device. Huge selection of cards or design your own. Handwriting service integrates with 1000's of apps.
Sortd - Rated the #1 App for Gmail
Felt for iPhone - Handwritten cards for the modern world
Drag for Gmail - Transform Gmail into organized To Do lists (like Trello)
Inkpact - Send genuine handwritten messages in just a few clicks
KanbanMail - A Kanban board for your emails.