This article is intended for those whom want to transfer their domain to an existing 1&1 account from another company. If you have already added your domain to the 1&1 Control Panel as an external domain and want to now completely transfer the domain to 1&1, please read how to Transfer Your External Domain's Registration to 1&1 instead.
It is recommended that you first read the Transfer of Registrar Process Overview to familiarize yourself with the Transfer of Registrar process.
You will receive an e-mail addressed to the Reg-C or Admin-C contact specified for the domain to acknowledge and allow the transfer. Once the acknowledgment for a transfer is received, 1&1 will start the actual transfer process, which usually takes 5 calendar days. In the process of transfer, typically DNS information will change which may result in an additional 24-48 hours for propagation to complete.