More reliability You can use the reliability of your email server with an increase Mailbag. Email is usually delivered directly to your e-mail server. If your mail server is unreachable, the mail will be automatically saved to the Mailbag, where it will be stored. When your mail server is back online, your mail will then be delivered from the Mailbag. | | More security If you do not want to expose your mail server to the internet, then you can use a Mailbag to receive mail. The Mailbag will then send your mail to your internal mail server. This can also be done via a secure VPN connection or white-listed IP address, this is optional. |