Depends on what your own IP will accept. During my IVA everything was scanned and attached to emails with no issues.
My opinions are merely that .. opinions based on experience. Always seek professional advice.
IVA Completed 23rd July 2013 .... C.C. 10th January 2014 http://foggy.blogs.iva.co.uk
I had to physically send mine in and then when they stopped doing paper ones and only ever sent them if the wages varied by a pound, I had to do bank statements.
Sharing from experiences of dealing with debt
The greatness of a man is not in how much wealth he acquires, but in his integrity and his ability to affect those around him positively.
Bob Marley. http://kallis3.blogs.iva.co.uk