By default, Safari for Windows removes RSS articles after two weeks. You may require that it be more or less frequent than the default setting. Follow these steps to change the interval for removing RSS articles:
1. Open Safari.
2. Click Edit and select Preferences.
3. Select the RSS tab.
4. Use the Remove articles dropdown to select the desired interval, the choices are: After one day, After one week, After two weeks, After one month, After one year, or Never.
5. Close the Preferences window.
