Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
ImageGlass - You can use Image to view your digital images and photos of many different formats.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Universal Viewer - Universal Viewer is an advanced file viewer for wide range of formats. Supported file formats are:
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.
Phiewer - Image Viewer - Phiewer is the easiest and fastest way to view your images, videos and even audio files.