vmmail is an mail transport server software.
It is used for the central filing and administration of mails.
With vmmail you have a smart host mail server to send, receive and archive mails. Manage your mails with a web frontend or an IMAP mail client.
The prerequisite is that a provider (ISP) has an e-mail account and an SMTP and POP3 access is available.
vmmail is out of the box: install an run.