It's illegal to surf the Dark Web, even if you are seeking a legitimate business. The Internet is not governed by the same rules that govern the real world and when you are using your computer to access content that is available outside of the range of what is considered to be safe browsing on a normal computer, you can be held criminally liable for any activity carried out using that computer. The web is not a safe place, there is no walled garden. If you want to access any website or email address at all from the Dark Web, which is part of the same network as The Real World, you will need to ensure that you use a reliable web proxy which is installed within Indian Websites