Enable Mailing List Services

you can enable the mailing service for your customers by going to admin >> store configuration >> external service settings >> mailing list services note to enable the mailing list services, contact the technical team the upload mail list service will allow your customers to upload their mailing lists in the form of a csv file later on, you can download the file from the orders section and take action as required see more also, for the csv file, admin has the provision to update address fields, such as adding field names, changing labels, setting mandatory fields, editing, deleting any fields, and more to get this provision, contact the technical team