Yes. As you create new custom Filters, a preview will display at the bottom of the Filter modal, showing 3 (or 6, when multiple Senders are selected) recent emails that would have been delivered with the new Filter, had it been applied. If no emails would have been delivered, that will also be noted and you may wish to adjust your keyword settings.
From the lockrMail dashboard, click on the line and dot graphic to the right of the 'Block' option. This will open a pop-up box where you can set up your Filter. By default you will be on the Filter 'Library'... Read More