This is the most simple kind of email account and it is designed to accept email for you and hold it on the mail server until such time as you want to collect it.
Using a single device such as a PC, on collection the email is delivered to the PC and removed from the server. However as most people now collect email on multiple devices, such as laptops and smartphones too, it is possible to leave mail on the server for finite periods of time.
We will advise the most appropriate configuration. If you need to keep all your email online continually ask us about an IMAP account or see the full cloud hosted Microsoft Exchange services.