No filter

Take all files, regardless of date

Since last backup

Take only files that have been created or modified since the last backup.

Today

Take only files that have been created or modified today

This week

Take only files that have been created or modified this week.

This month

Take only files that have been created or modified this month

Not older than

Take only files that are not older than xx days.

Range

Take only files that were created or modifed during a certain date range.

Only include if file is newer than the same file on destination

You can choose to include only those files that have a newer filedate than the file at the destination folder. You can use this function to synchronize two folders.