This is the default limit for the initial segment fetched by a query retrieving a list of messages. This number can be changed on a per-case basis in the Limit field of the Query Selection dialog.

when a list of messages is displayed, the program can pre-fetch to memory the bodies of messages not yet read and that are immediately below in the list. That may save some time when later going through the list, especially when connected remotely through a slow network link.

the program may use more than one connection to perform simultaneous tasks. This number is the maximum number of such connections.

When set to a non-zero value, this parameter gives the time interval to wait between two automatic refreshs of the currently selected messages list. When set to zero, automatic refresh is disabled.

The database configuration key for this setting is fetch/auto_refresh_messages_list

This setting is only effective when the automatic refresh interval is not zero. When checked on, it means that the contents of the list will automatically show new messages following an automatic refresh, without the need for any user interaction.

When checked off, new messages will not appear until the user refreshes the selection by using the Selection->Refresh command or by clicking on the "New mail" button at the bottom right of the main window.

The contents of the quick selection panel are updated in both cases.

The database configuration key for this setting is fetch/auto_incorporate_new_results