Hi all,
Here is Email App control example:
https://developer.tizen.org/dev-guide/2.2.1/org.tizen.native.appprogramming/html/guide/app/appcontrol_email.htm

It works fine, almost (file is not attached to email).
The code sample uses path to Application resources folder ‘./PackageId>/res’ and  there are no permissions in Tizen to attach file from this folder.
Files should be attached ‘./PackageId/shared/res’ (or from another shared subfolder) .

Looks like dev guide should be fixed. It confuses developers.
Alexey.