I have to create 3 apps (one for each operating system, IoS, Android, Windows10 Phone) to copy the screen (bitmap) and send it by e-mail.
App. they must be installed easily (without Jail-Break, or root privileges, etc) on the various devices.
Software must be developed with VisualStudio 2017.
Mail Configuration Parameters (Smtp, Shipment Timing, Image Format to be Shipped) Directly Into Source Code.
If possible you can hide the application (icons, etc.).