What license do i need?
The regular license allows you to use MailWizz for personal purposes, that is, for your website(s), where you don’t have any material win from directly using the application but only use the app to fit your personal purposes.
The extended license allows you to use MailWizz as a SAAS platform, to start your own email marketing service where people register and add their own email lists and send campaigns from and pay you a certain amount to do so.
Please note, both licenses allow just one install. If you need MailWizz installed on multiple servers, you need a separate license for each install you do.