AcyMailing Enterprise enables you to generate newsletters automatically. Just set the frequency, and select some categories from any Joomla component (Joomla articles, Virtuemart, HikaShop, Mosets tree, K2, Sobi2, jCalPro, jEvents, EventList...) and AcyMailing will automatically create and send a newsletter every X days including all your newly created articles.

Read more: AcyMailing Enterprise v.5.8.0 for Joomla 3 + Plugins