Download the correct package as per your OpenCart version. The downloaded zip package must have the name newsletter-popup-x.x.x.ocmod.zip
Login to your admin panel
Go to Extension > Extension Installer. Upload this package (newsletter-popup-x.x.x.ocmod.zip)
Go to Extensions > Extensions > Modules
Install Multi-purpose Popup/Block
Edit and make the required setup as per your requirement and click on the Save button
Click on the Email Setup Button.
Make the required configurations and click on the SAVE button
You are done. You now need to assign the module to required layouts (just like any other OpenCart Module)
Go to Design > Layouts. Add Module to required layouts. (If you are using popup mode, you can assign the bottom position). Journal Template users will need to add the module from the Journal > Layouts
Go to Extensions > Modification. Click on refresh modification
Go to Admin: Marketing > Mail and Ensure that you see “Guest Subscribers” in the list
