Please note: To provide you a higher level of security, it is 1&1's policy to verify each credit card provided. 1&1 will make a $6.00 authorization-only charge, which is then immediately reversed by your financial institution, to ensure the functionality of the credit card in our billing system. This transaction may show up on your credit card invoice. If you have any further questions, please contact our billing department at billing@1and1.com.