rss2email: add page (#9024)

pages/common/rss2email.md

@@ -0,0 +1,28 @@
+# rss2email
+
+> Tool for delivering news from RSS feeds to an email program.
+> More information: <https://github.com/rss2email/rss2email>.
+
+- List all feeds:
+
+`r2e list`
+
+- Convert RSS entries to email:
+
+`r2e run`
+
+- Add a feed:
+
+`r2e add {{feed_address}}`
+
+- Add a feed with a specific email address:
+
+`r2e add {{feed_address}} {{new_email@example.com}}`
+
+- Delete a specific feed:
+
+`r2e delete {{number_of_feed_in_list}}`
+
+- Display help:
+
+`r2e -h`