Where and how to deliver account information when selling an account?
You should deliver all the necessary account information within Eldorado chat which gives you access to highly secure and end-to-end encrypted communications with the buyer. Should the sale of the account necessitate a change of email, as in the cases where the account email is set, you should facilitate it by providing any necessary confirmation from the email in question.
What account information should be provided to the buyer?
You should provide the login username, password, email (if present) and any security questions answers (if present).