The message store is a database in the object store used to store messages. It is partitioned into folders arranged in a flat hierarchy. Windows CE defines five types of folders:
A built-in folder for storing all incoming messages.
A built-in folder for queuing messages to be sent the next time a connection is made.
A built-in folder for storing a copy of sent messages.
A built-in pseudofolder that displays messages marked for deletion.
Additional folders (up to 21) that a user can create. Folder names are limited to 31 characters.
You may not rename or delete any of the built-in folders. Deleted messages remain in their original folders, but are marked with a flag. They are visible only in the Deleted Items pseudofolder. When a user recovers a deleted message, the flag is unmarked and the message become visible again in the original folder.