Opendias - Opendias is a professional document scanning and storage utility for the home user.
The Bat - The Bat! is a secure desktop email client for Windows, designed to protect your correspondence against third-parties and to save your time.
Docufy - FREE Android document scanning app. New features. Manage your documents and scan to PDF. Sync to Google Drive automatically. Add notes and handwriting.
Mailspring - Mailspring is a mail client for Mac, Windows and Linux.
eDoc Organizer - eDoc Organizer is a document management software solution for home and small business users.
Geary - Geary is an email application built for GNOME 3.