Not sure I like it, looks like force feeding tweets. Would you be OK with receiving more notifications about tweets you could have only a remote interest in?
Excerpt from TechCrunch:
Twitter has just finalized a deal to hire the team and buy the technology of RestEngine, a personalized email marketing service, which could help Twitter deliver email digests of great tweets you’ve missed.
They already started this. Got one or two already.
We’re rolling out this new email out to everyone over the next few weeks, so keep checking your inbox for new messages from Twitter. Like other Twitter email notifications, you can manage your preferences for this new digest in your Notification Settings.