MailWizz extensions are packed in zip archives, so in order to install a MailWizz extension, you have to go to Backend > Extend > Extensions area and click on the “Upload Extension” button. This will open a dialog like:
From here, you’ll select your extension archive, and upload it. Once the archive is uploaded, MailWizz will inform you and you’ll be able to enable it.
Please note that most of the extensions have settings pages, and in order to reach those pages, you have to click on the extension title from the extensions list.
For example, in order to view CKEditor settings, we click on it’s title like:
We can also click on the little “eye” icon from the right side of each extension row.