Growing an email list has always been a trouble spot and that may be posing a greater problem going forward, according to Connection Engine's Eric Kirby.

Publishers lose money when they send out email, so one company has built a platform allowing for display ads to be inserted.

Eric Kirby, CEO of Connection Engine, says for many companies a small amount of customers account for a disproportionate amount of transactions and business and it's important through email analytics to "differentiate high-value customers," which can be worth six times more.

Engagement may be the most overused word in email marketing. Contested only by "relevance," perhaps.

Trendline Interactive strategist Alex Williams said some clients are experiencing huge email open rates on emerging devices.

In his keynote at the MediaPost Email Insider Summit, Augeo Marketing CMO Ken Greer spoke about an "engagement continuum" in order to build customer loyalty. There are five steps ....

Email marketers who don't move aggressively in delivering messages to mobile devices do so at their own peril. More than 1 billion consumers will be accessing email on mobile phones by 2013, compared to fewer than 200 million in 2009.

Augeo CMO Ken Greer says there are three tactics that can improve email effectiveness: rewards, group validation and shared values.

Augeo Marketing CMO Ken Greer said email marketing isn't dead, but there is a problem hurting engagement. "I think the problem with email marketing today is ubiquity," he said.

Augeo Marketing CMO Ken Greer is conducting the keynote for day two of the MediaPost Email Insider Summit and says the attendees will collectively send out 1 billion emails over the next year, so you have to think not all will be spam-like.