The options on this screen govern which mail services the account is allowed to use: POP3, IMAP, MultiPOP, Outlook Connector. Email access via WorldClient is controlled from the Web Services screen.
This account can use the following services:
Account can use POP3 (Post Office Protocol v3)
When this box is checked, the account's mail can be accessed via Post Office Protocol v3 (POP3). Virtually all email client software supports this protocol.
...but only from LAN IPs
Check this box if you wish to allow the account to be accessed via POP3 only when the user is connecting from a LAN IP address.
Account can use IMAP (Internet Message Access Protocol v4 rev 1)
When this box is checked, the account's mail can be accessed via Internet Message Access Protocol v4 rev 1 (IMAP4). IMAP is more versatile than POP3, allowing email to be managed on the server and accessed using multiple clients. Most email client software supports this protocol.
...but only from LAN IPs
Check this box if you wish to allow the account to be accessed via IMAP only when the user is connecting from a LAN IP address.
Account can use MultiPOP (Pull mail from multiple POP3 sources)
Check this box if you wish to allow the account to use MultiPOP. MultiPOP allows the user to collect mail from other email accounts, maintained on other mail servers.
Account can use Outlook Connector v2.x
Click this option if you wish to allow the account to share Microsoft Outlook folders using Outlook Connector for MDaemon. Note: this option will only be available when Outlook Connector is installed.