Download Free MailWizz Email Marketing PHP Script 1.How to Create “Groups & Customer Account” in Mailwizz Panel ? 12. The license key, are saved in database or not ? We would implement a replica db ( actually only 2 BE database ) with +2 FE behind a LB ( each FE must own the proper license key, right ?) and if the license key are saved onto a table of a DB probably we must have only 1 license for all FE and not 1 license for each FE. This is an optional field which is useful in. Mailwizz license key If you noticed, Postal will give you an example SPF to copy, and it looks like this: v=spf1 a mx include: spf.