As long as you are not sending unsolicited commercial e-mail, you are within the proper boundaries. This means you are not allowed to send commercial advertisements or promotions without your recipient's prior consent. Spamming is prohibited and will not be tolerated. Cancellation notice is required in writing, e-mail, or on the telephone. Please know your username, password, and address.
Most people pay by check.
Money orders are acceptable as well. Never send cash through the postal service. Pre-payment is required before you can start a new account. Or you can use a credit card to start service immediately. Due to a few bad seeds, we must enforce this policy for all new accounts.