If an article is starred in Inoreader, then add that article to the daily email digest.
If
New starred article
This Trigger will fire every time you star an article on Inoreader. It will also fire if a star is automatically added from a rule.
Then
Add to daily email digest
This Action will add an item to your daily digest sent once a day at the time you specify.
ID xwT5HiVN
Explore more great ways to automate Inoreader and Email Digest