nomacs - nomacs is a free, open source image viewer, which supports mu
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!
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
sxiv - Simple X Image Viewer. Contribute to muennich/sxiv development by creating an account on GitHub.
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.