Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Manual Camera for iPhone - Custom exposure for your iPhone camera
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Halide - A premium camera for your phone
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.
NeuralCam Night Photo - The first night mode camera for the iPhone