RecoverFolder is a sandbox setting in Sandboxie Ini. It specifies the sandboxed folders that Quick Recovery should examine. Shell Folders may be specified. For example:
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[DefaultBox]
RecoverFolder=%Personal%
RecoverFolder=C:\Downloads
[InstallBox]
RecoverFolder=D:\Program Files
The first two example settings specify that Quick Recovery from the DefaultBox sandbox should look in the Documents and the Downloads folders in drive C.
The third example setting specifies that QuickRecovery from the InstallBox sandbox should look in the Program Files folder in drive D.
Note that when Quick Recovery looks in the specified folder, it also looks in any folders within that folder, and any folders within those folders, for as many levels of depth as are needed.
Related Sandboxie Control setting: Sandbox Settings > Recovery > Quick Recovery