In case you missed them, these are some of the stories that made the rounds at our office last week, including a great analysis of birthday emails and how top 100 retailers are missing the mark in email marketing.

• New Data Prove Why You Need to Segment Your Email Marketing – In case you still don’t believe that you need to segment your email marketing, HubSpot’s Dan Zarrella breaks down some new data to make the case.
• Birthday Emails: Analysis and Samples from My Inbox – Silverpop’s Loren McDonald analyzes the birthday emails he received this year to glean insights into how effectively marketers use this tool.
• Is Your Email Success Attribution Wishful Thinking? – Kara Trivunovic of StrongMail offers suggestions for not going overboard with your email marketing attribution.
• Top 100 retailers failing to make the most of email marketing – Econsultancy reviews how top 100 retailers’ email marketing programs measure up.
• Merchants Rate Email, SEO Most Valuable to Online Strategies – See how different marketing channels stack up based on how merchants rate the value to their businesses.

What have you been reading this week? We’d love to hear. Drop us a note in the comments or reach out to us on Twitter, Facebook, LinkedIn or Pinterest.

Photo courtesy of Mike Licht, NotionsCapital.com