I've said it before, and I'll say it again. It doesn't matter how great your email marketing is if nobody can see it. And getting hundreds of thousands of eyes on your amazing email marketing campaigns begins with email deliverability.

If there's one thing that makes our toes tingle (other than inbound marketing, of course), it's seeing examples of marketing done right. Great marketing makes us excited to be working in a trailblazing industry where other marketers are doing seriously innovative things to make marketing people actually like.

Looks like Twitter is putting its January acquisition of social news startup Summify to good use! Yesterday, the official Twitter blog announced that it will start sending users a weekly email digest featuring relevant tweets and stories shared by the people they're connected with on Twitter. This just several days after news of Twitter's "acqui-hire" of personalized email marketing service RestEngine.

As the Boston Globe highlighted eloquently on our behalf to announce today's launch of HubSpot's new email tools, email marketing is not dead! But over the years, some less than savory email marketing behaviors by brands -- whether they knew better or not -- have soured many recipients to the email messages filling up their inboxes.

By now, most marketers understand the importance of email to their overall marketing strategy and recognize that it's not dying in the wake of other emerging marketing tactics like social media. But while most marketers realize that email is here to stay, unfortunately, that doesn't exactly mean certain email marketing best practices have caught on. Segmentation is one such best practices. Segmenting your communications can improve your email marketing campaigns by leaps and bounds (read on -- we have the data to prove it!).