Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!
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.
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.