Attesting a copy and then sending copies of the attested mark sheets will be fine. It is a good idea to communicate with the colleges before hand just to let them know that they will accept it that way. But most colleges are fine with that.
To send a attested marksheet there are several ways:
- Scan the attested copy and email the scanned copy to the email of the admission counselor
- Take a decent picture with a good camera. Make sure that the text is totally visible and forward that copy through email to the admission office.
- Ask colleges if they accept it other ways