Click the upload button, select your .zip file, and upload the extension.
Search for specific or Stripo integrations for MailWizz. Give you a step-by-step for GrapesJS (the default option).
MailWizz natively supports builders like GrapesJS and Stripo in modern versions. If you're still looking for the editor, I can:
Once uploaded, enable the extension within the extensions list. Important Notes:
Log in to your MailWizz EMA dashboard as an administrator. Extensions Menu: Go to the "Extensions" section.