Chakra or aura readings can be based on an online test which you need to fill out on the website. These will ask multi-choice questions about your views, health and mental state to determine what areas of your life you need to work on. The results can be emailed to you to allow you to refer to the report in the future.
Email psychic readings can also be done using tarot cards, runes or I Ching. The online psychic will draw the cards, or interpret the runes or I Ching tokens, for you and do a reading in response to a specific question, or a general reading.
Many people prefer receiving an email which they can print out as a record of their psychic reading. Chat rooms and webcams leave you with no record to refer back to in the future. Sometimes it can be interesting to look back at a reading in months to come when parts that didn't make sense at the time, may make sense now.
These days most online services will allow you to pay online, making the whole transaction much quicker and more efficient. Once you have paid, the email usually arrives within a few days. Make sure you know what you are getting before you pay. Paying by credit card, or debit card, through a website is usually pretty safe these days - make sure the site is using a secure server where the information is encrypted for the payment process.
Your browser should notify you that you are entering a secure server.