I have created a filter. How to use it on the existing email messages in my Inbox?

I have created a filter. How to use it on the existing email messages in my Inbox?

You can apply any filter on the existing messages in the Mailbox also. Select the filters and click Run Through filters in the settings page. You will be prompted to specify the folder on which you want to apply the filter. To apply filters on multiple folders, repeat the ‘Run through filters’ with different folders.