Documents signed and send through email validity

Yes.  You can appear on behalf of your client as he is staying abroad if he gives you vakalat or a POA.

Electronic evidence ( emails,whatsapp&massages ) are admissible in evidence subject to submission of certificate u/sec 65 b of Evidence Act.

You can just attaest as an  advocate  the photo copy and submit in court, that is very much vaild .

ll kinds of e-mails can be used as evidence in a court of law in India. This is by virtue of the amendments made in the Indian Evidence Act as amended by the Indian Information Technology Act 2000. These e-mails are electronic communications and information and by virtue of section 4 of the IT Act, such electronic information has been granted legal recognition and validity.

 

I agree with advocate Bhartesh Goyal, that provisions is mandatory. When the law says that some acts have to be done in certain manner it should be done in that manner or not at all.  One certainly does not have the privilege to say that the Law says it is to be done in this manner but I will do it in different manner.