Too much of a good thing is rarely a good idea, especially where email's concerned. With time serving as both ally and foe, we have no choice but to breeze through our email inboxes to save as many precious seconds as we can—overlooking or deleting anything that seems irrelevant or uninteresting.

But with effective strategy comes email success. For its recent publication "The Lyris Email Report: 5 Strategies to Jumpstart Your 2012," researchers surveyed 505 marketers at varying levels within their companies to determine their biggest email marketing challenges and concerns. With challenges ranging from consistent message relevance to streamlining segmentation, and concerns ranging from handling significant loads of data to finding connections between multichannel behaviors, Lyris narrowed down the list based on each issue's importance to determine the top troublemakers.