You can have the signature include your name, E-mail address, company logo or any other text you desire. Try and keep your signature short, i.e. no more than a few lines, as this signature may be appended to your outgoing messages, adding overhead to the transfer time of the message. When you sign up, you can choose your own user name, as long as no one else has previously chosen it. This is due to the fact that user names are unique. There are several types of domains.
Countries also have their own domains.
Using it is as easy as browsing to the web site, logging on and sending or receiving E-mail messages. Sessions expire after several minutes of idle time. This is done in order to reduce server load and to protect your privacy in case you forget to logout at the end of a session. In order to continue an expired session you need to login again. Top of section I hit a button and nothing happened for a long time.