Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
DOSBox - DOSBox is a DOS-emulator that uses the SDL-library.
Newton Mail - Newton is a fully featured mail client available for Android, iOS, macOS and Windows.
vDosPlus - vDosPlus (formerly vDos-lfn) is a free general-purpose non-gaming DOS emulator running on Windows...
Aqua Mail - Android Mail Client.
FreeDOS - . creation tool just didn't feel up to the task. So, I created a new utility that may have better results.