1and1 Mail is an e-mail tool that can spare you of sending e-mails in a large period of time. Using this software, you can send and receive large amounts of e-mails, documents or mass e-mails to everyone in your contact book. 1to1 Mail is very useful for those who want to send a large variety of e-mails, such as newsletters or external files to more people at the same time. You don’t need to be an expert to use this software, as it is very easy to be used by everyone. With 1and1 Mail, you can also save time, because sending e-mails became easily and faster.