Myth Debunked: By Morgan Stewart The day or time at which you chose to send an email message can have a real impact on response rates. As an email strategist, I’m frequently asked about the latest trends regarding the “best day to send.” Conventional wisdom on the topic often changes, and several theories suggest opposing days. So it’s no wonder why so many people are looking for the answer! In 2004, two separate studies were released touting Monday as the best day of the week to send email. The first study, published by ReturnPath, showed that deliverability rates were best for messages sent on Monday. The second study, conducted by eROI and published by MarketingSherpa, suggested that open and click rates are also better on Mondays. Yet prior to these studies, conventional wisdom led marketers to believe that Tuesday was the best day to send email. ExactTarget recently conducted its own research on the topic. The study analyzed twelve months of historical data, 2000 organizations, 160,000 email campaigns, and 800 million email messages which makes it the largest amount of data ever analyzed in a study on this topic. The study focused on metrics measuring customer response, with controls set by basing response rates on the number of messages sent, not messages delivered. The following are the key findings of this study for the period covering December 2003 through November 2004:
Best days for opens are not necessarily the best for clicks. Comparing results month-by-month shows that there are serious inconsistencies between the best day for opens and the best day for clicks. Marketers need to make a distinction of which they want to drive. Maximizing open rates is important for brand exposure, while generating clicks is the key if the goal is conversion. Industry articles may jinx results. MarketingSherpa published the results of a study in late July stating that the best day of the week to send was Monday. This study was based on the results for Q2 2004. The results of our analysis for Q2 2004 also suggest that Monday was the best day to send in Q2 2004. However, since that report was published, Monday has consistently ranked 5th and 6th in battle for “best day to send” in terms of open rate. Wednesday through Friday maximize opens. Starting in July 2004, the best days for maximizing open rates shifted to later in the work week. For the July through November period, Friday performed the best, but it was less than 0.5% ahead of Wednesday and Thursday in average open rate. Weekends rule for generating clicks.
Weekend results are mixed with open rates performing slightly below
average, but Sunday and Saturday yield the highest click-through
rates respectively. With less competition in the inbox on weekends,
people who open your email have more time to actually read and
respond to your message. Email Software with Limited or No HTML
Capabilities Results by industry vary. The trends
highlighted above cover a broad spectrum of industries. Inbox competition is alive and well. Sending at peak times increases competition for attention in the subscriber’s inbox. Open and click-through rates are generally lower when more people are sending. For example, in the business services industry, most campaigns are sent on Mondays (nearly one-third of all campaigns for this industry), and Monday open rates are 8% lower than the industry average. The results of our study indicate that
marketers need to rethink the best times for sending email. Instead of following industry trends (including
the results outlined in this article), marketers
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