Is it possible to submit a PDF fillable form through email without enabling the "additional features" via Adobe Acrobat Pro X? Or in order to submit anything by email is it HAS to be enabled? Thanks!
If you want to allow the user to make changes, as with a form, and send the entire PDF using Reader, the document does need to be Reader-enabled. It is otherwise not able to save any changes that can be made, which must be done if you want the entire modified PDF to be sent. If you only want to submit the form data or your users will only be using Acrobat (or certain non-Adobe "Readers"), then it doesn't. Note that you can populate a blank form using Acrobat if you are sent just the form data. Reader 10 is also able to add sticky note and text highlight comments without the document being Reader-enabled.