Extract the zip file.open the 3.x folder.Upload the dealoftheday.ocmod.zip file from Extensions > Installer. Refresh the Modifications from Extensions > Modifications. Please grant the permission to the user groups. Then Go to Extensions > Modules.You will see the Deal of the Day module.Click on Intall. Enable the Deal of the day Discount. After successful install You can configure the settings as per your requirements.

Extract the zip file.open the 2.3x/2.x folder.Upload admin,catalog folder to your server from the "Upload" folder.
Upload the install.ocmod.xml file from Extension Installer. Refresh the Modifications from Extensions > Modifications. Please grant the permission to the user groups. Then Go to Extensions > Modules.You will see the Deal of the Day module.Click on Intall. Enable the Deal of the day Discount. After successful install You can configure the settings as per your requirements.

Create deals for day wise. Enable the deal status,add start date, end date,description and deal discount. Enable the module status and select the deal. You can create Email template for your customers.