In the left-hand menu, look for Settings . Depending on your version, you may need to click directly on License under the Settings menu, or go to Settings > Common > License .

| Environment | License Requirement | |-------------|----------------------| | Production domain (e.g., mailer.yourcompany.com ) | ✔️ One license key | | Staging (e.g., staging.yourcompany.com ) | ❌ No license needed (if IP-restricted or .htaccess protected) | | Localhost ( 127.0.0.1 , localhost , *.local ) | ❌ No license needed | | Subdomains of production (e.g., app.domain.com , go.domain.com ) | ✔️ Covered by same license (must point to same installation) | | Second completely different domain | ❌ Requires second license |

, you're probably eager to get your self-hosted email marketing engine running. One of the first things you'll encounter during the MailWizz installation process is the request for your license key

While cracked versions of Mailwizz exist that bypass the license key requirement, they are highly discouraged for email marketing software.

Without a valid license, MailWizz still works 100% for sending campaigns. You only lose and official support .

After purchase, your license key is available in two places:

While Mailwizz license keys are designed to work seamlessly, some common issues may arise, including: