You may have noticed an unfamiliar email in your inbox from Twitter yesterday. This is their new weekly email digest, helping users discover the best of Twitter. The email summary features the most relevant Tweets and stories shared by the people you're connected to on Twitter. This new email digest also features the most engaging Tweets seen by the people you follow, even if you don't follow those who wrote them. You can see who from your network retweeted or favorited these Tweets and click "View Details" to retweet, favorite, reply or view the conversation.
This new email will be rolled out to all Twitter users over the next few weeks, so keep checking your inbox if you haven't received it yet. If you prefer not to receive the email, you can manage your preferences in your Notification Settings.