Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
IcoFX - IcoFX is an all-in-one solution for icon creation, extraction and editing.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
JDraw - Open Source SF.net
eM Client - eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.
IconsExtract - Extract icons and cursors stored in EXE, DLL, OCX, CPL files