We would favor if you purchase it directly from the MailWizz Internet site via Envato Market. If you don't Use a license, we can purchase MailWizz license on your behalf and put in the System for you. MUA (Mail Consumer Agent) would be the email consumer we described earlier https://www.upwork.com/services/product/development-it-setup-web-conferencing-system-using-bigbluebutton-and-scalelite-1446381070830473216?ref=project_share&tier=0