as per Section 65B of the The Indian Evidence Act, 1872 for such emails to be proved, it has to be proved/established that the computer during the relevant period was in the lawful control of the person proving the email; that information was regularly fed into the computer in the ordinary course of the activities; that the computer was operating properly and the contents printed on paper are derived from the information fed into the computer in the ordinary course of activities and a certificate identifying the electronic record has to be proved.
2) court will not allow you to give live demo by taking your laptop and router and by login to the server
3) SMS are admissible in evidence under provisions of section 65B)(1) of Evidence act
4)Notwithstanding anything contained in this Act, any information contained in an electronic record which is printed on a paper, stored, recorded or copied in optical or magnetic media produced by a computer (hereinafter referred to as the computer output) shall be deemed to be also a document, if the conditions mentioned in this section are satisfied in relation to the information and computer in question and shall be admissible in any proceedings, without further proof or production of the original, as evidence of any contents of the original or of any fact stated therein of which direct evidence would be admissible.