Since Mailwizz is a self-hosted email marketing application, "installing" the license key usually refers to after you have uploaded the application files to your server.
: Ensure your server can communicate with mailwizz.com . If your firewall blocks outgoing requests, the license validation will fail. mailwizz license key install
You must reset or deregister the license from the old domain before reuse (see management steps below). How to Reset or Move Your MailWizz License Since Mailwizz is a self-hosted email marketing application,
You will arrive at the screen.