Webuzo for Webinsta Maillist - Version 1.3e WEBinsta maillist manager is built to provide a centralized mailing list / newsletter system for small to medium website . Its simple yet quite powerfull . It support the standard subscribe and un-subscribe , remote verification , unsubscribe links , attachments and host of other such features . The best of all the total integration is less than 3 lines of code .