Return Path Certification resulted in 40% increase in delivery speed and measurable increase in email response rates for daily deal site, Groupon

Nach nur 48 Stunden hat sich die Investition in die Zertifizierung von Return Path schon bezahlt gemacht

“In just 48 hours, the test paid for the investment in Return Path Certification for the entire year. Because our internal research shows that delivering our deals to the inbox between 6am and 9am increases open rates and clicks, sending our mail through Return Path Certified IPs allows us to know 98%+ of our emails are being delivered to inboxes on time. And knowing our images are enabled helps build and maintain our brand. There is no question in our mind – Return Path Certification is an investment with a significant return for our business.”

- John Becvar Groupon


Groupon is the premier daily deal site on the Internet. Each day, limited-time offers for discounted goods and services -“daily deals” – are sent to Groupon’s list of over 70 million subscribers, tailored to geographic locale and other subscriber preferences. These emails encourage subscribers to purchase “Groupons” – vouchers redeemable for the daily deals before the offers expire (usually by midnight). Because of the nature of the daily deal, timing is critical and inbox placement is crucial to the success of their business model.


Email is the primary way Groupon’s millions of subscribers receive their daily deals. And timing is everything, especially for people on the lookout for a great deal. Groupon wanted to be sure every email was making it to the inbox in order to improve overall open and purchase rates. Subscribers who don’t receive a timely morning email announcing that day’s deals have less opportunity to take advantage of Groupon’s limited-time offers. Even a weekly sweep of a junk folder would be too late for these unique marketing messages. Groupon also wanted to be sure its messages were arriving with images enabled.

With Groupon’s volume (over 1 billion emails sent monthly in North America alone), it was experiencing throttling (e.g. its delivery speeds were slowed down by receiving servers) at some major ISPs.


Groupon turned to Return Path in 2010 to become Return Path Certified. Groupon wanted to be sure the investment in the program was paying off, so it ran a test in 2011 by selecting a small market and used two different IPs to send email to 70,000 subscribers each day for two weeks. Fifty percent of Groupon’s email went through a non-certified IP and the other half was through the Return Path Certified IP. The objective was to measure the impact of the Return Path Certification on ensuring the delivery of Groupon email to subscribers’ inboxes during key times and to measure any increase in open rate, click rate and impact on purchases.


The test had an early and clear winner. Groupon immediately saw 2% better open rates for those emails being sent through the Certified IP vs. Non-Certified. They also saw increased click-through rates of 6%. Those increases might seem modest, but given Groupon’s monthly volume of over 1 billion emails, the increased response rates generated by using the Return Path Certified IP could translate into a multi-million dollar revenue upside for the company.

The other great news is the increased send speed times. The Certified mail send speed was 40% faster than the non-Certified send. What does that mean for Groupon? Lower operation costs realized by a smaller number of deferrals caused by throttling, and better control over the time its subscribers receive their daily offers in the Groupon sweet spot between 6am and 9am locally.