If you install Mailster you have to validate your purchase code. This ensures you have a valid license and are eligible to use Mailster on your site. Here are the error messages which can show up during the verification process.
Depending on your license you can use Mailster on one site or more. If you like to use your single-use license on a different domain and move all the data from Site A to Site B you have to follow some steps.
Custom Fields can store different values from your subscribers. If you like to create a Birthday campaign for instance you have to set up a date field. By default, there’s no date picker applied to that field as the look wouldn’t match your theme.