According to Wikipedia, RSS stands for Rich Site Summary and uses a family of standard web feed formats, to publish frequently updated information: blog entries, news headlines, audio, video. An RSS document (called "feed", "web feed") includes full or summarized text, and metadata, like publishing date and author's name.
Newzmate uses RSS feeds to get notifications of new publications for further including them into newsletters. This is the typical structure of the RSS feed:
<?xml version="1.0" encoding="UTF-8" ?>
<enclosure url="" type="image/png"/>
Here are the most necessary tags for RSS feeds to work with Newzmate:
<guid> - unique identificator of the article
<title> - title of the article
<category> - use this tag to inform about category of content
<link> - link to the article
<description> - short summary or full text of the article, depends on your needs
<pubdate> - date publication. Here is an example: 2016-09-26T00:00:00.000Z, in the format: YYYY-MM-DDTHH:MM:SS:MSZ.
<date> - when the article was added to the RSS feed
<enclosure> - description of the object, which is attached to the article ( usually includes link to the image).