license key is a unique identifier used to activate and validate your self-hosted email marketing platform. It is bound to the specific server IP address where you first install the application Where to Find Your Key If you purchased MailWizz through the Envato Marketplace , your license key is referred to as the Item Purchase Code Log into your Envato account Navigate to the

Firewall Blocks: Ensure your server can communicate with mailwizz.com on port 443 (SSL) so the application can perform mandatory periodic license validation checks.

Official Support: You cannot open support tickets without a valid purchase code.