hey so i was wondering witch newsletter plugin is the best that festinger vault already have in their site?
i need an easy to setup and fully customized 
Hi @apostolos.
We are sorry for the delayed response here.
We have been using this newsletter extension:
and is there a premium version in festinger site ? to download or i have to buy it ?
The core of the plugin is free. You can extend the features by installing their add-ons, which are all available on our website.