Articles - Written by Ken Magill - 0 Comments
Database Guru Calls ‘BS’ on Lifetime Value Detractors
By Ken Magill
Don’t think lifetime value is a valid metric in email marketing? Well, database marketing expert Arthur Hughes has one word for you: nonsense.
Last week’s piece in which Chris Donald, vice president of marketing at email marketing services provider Inbox Group, criticized lifetime value’s use as an email-marketing metric prompted a debate in the comments section of the Magill Report.
The article was also retweeted six times to a collective following of about 10,000 people.
But the most notable response came from Hughes, vice president, The Database Marketing Institute. Hughes is one of database marketing’s foremost experts.
He’s written nine books on marketing. The fourth edition of his book Strategic Database Marketing is scheduled to be published by McGraw Hill this fall. It will cover database marketing as applied to direct mail, email and mobile marketing.
In email, Hughes contends, lifetime value goes beyond clicks, opens and purchases to determine if the program is actually making money.
In fact, according to Hughes, there are a several metrics besides clicks, opens and purchases that should be used to calculate the value of an email address, including unsubscribes and undeliverables.
But one of the most important metrics in calculating subscriber lifetime value is what Hughes calls the “off-email multiplier,” or purchases prompted by the email but not made through the email.
“The fact is that email produces one, two and three times as much offline sales as they do online sales,” Hughes said.
He used professional sports as an example.
“They don’t sell season tickets using email. People follow their teams using email,” he said. “They [the leagues] know that people following their teams will go and buy tickets. What the emails do is get people interested in the product in this case.”
He added that if, say, American Airlines sends an email touting a sale on flights, people don’t necessarily click on the email and buy.
“They talk to their wife or husband and say: ‘Hey, we’ve always wanted to go there. Why don’t we go on American because they’re having a sale.’ Then they [make a reservation] because of the email, but if you look at the shopping cart, it’s empty because there was no sale there.
“All emails have secondary effects and that goes into lifetime value,” Hughes said.
He conceded that in order to calculate the off-email multiplier, some assumptions must be made. However, there are concrete ways to gauge it, he said.
“Some retailers offer in-store coupons,” he said. “You don’t want to do that all the time because it’ll drive you crazy, but you can offer a coupon and extrapolate.”
Loyalty programs are another way to calculate the off-email multiplier because loyalty purchases are tracked by name no matter what the sales channel, he said.
“You send Arthur Hughes an email and you notice he didn’t buy in the email but that same Arthur Hughes came into the store that afternoon,” he said. “Are the two connected? Maybe they are. You have to do a lot of estimating, but that’s the kind of thing you do.”
Inbound call center reps can also be given incentives to find out which channel drove the order, he said.
Assigning different product numbers according to channel can help measure the off-email multiplier, he added.
“Let’s say you’re selling an indoor grill,” he said. “If you call it an A54 in the email and a B54 in the catalog, anyone who calls asking for an A54 can only have heard about it through the email.”
Figuring subscriber lifetime value “requires a lot of analytical work,” Hughes said. “You have to estimate and extrapolate. Most companies are not spending enough on email because they look at their shopping carts and say: ‘Email’s only producing 3 percent of our sales.’ They don’t realize email’s producing 10 percent of their sales because they haven’t done the analysis.”
Costs of the product or service being offered, such as buying and warehousing, must be factored into lifetime value, as well, Hughes said.
“Part of lifetime value is not only figuring out the sale, but the cost,” he said.
And contrary to the argument made here last week, Hughes said he is completely comfortable using the lifetime-value metric to explain the value of an email address to management.
“I explain to them that a lot of this is estimated,” he said. “You know it’s happening. You know that when people get an email they drive to the mall and buy a product. But how many do? And how much do they spend? You have to be willing to estimate what the offline effect is.”
He recommends calculating lifetime value according to how much the average address is worth over three years.
“In this case lifetime value is really a misnomer because in this fast-moving world, someone may be with you for 10 years, but we don’t really care about that,” he said. “We care about this year, next year and the year after that.”
Hughes also said that email subscriber lifetime value is a different concept than that of customer lifetime value in traditional direct mail.
“With email, only about 10 percent of your subscribers ever buy anything from you,” he said. “Most of them get your email and don’t buy anything. With customers, by definition, all of them have bought something from you.
“So you start off with someone who has bought one of your products and they are much more valuable than a subscriber,” he added.
Hughes said he calculated email subscriber value for 51 companies last year. The values varied from 54 cents to $240.
“When I showed the 54-cent company their lifetime value they said, ‘Wow. We suspected that, but had no numbers to prove it,’” he said.
“So I worked with them to see what could be done with their almost worthless e-mails. We made many changes, and after three months, we had boosted their lifetime value to about $8. They were very happy and could put the results in the bank.”
Arthur Middleton Hughes, vice president of The Database Marketing Institute, has presented 28 seminars on database and email marketing. Arthur has also authored several books includingStrategic Database Marketing 4th Edition (McGraw-Hill 2012). He and Andrew Kordek, chief strategist and co-founder of Trendline Interactive, are hosting a two-day Email Strategy Study Group in Fort Lauderdale March 26-27, 2013, featuring group competition for email marketers responsible for subscriber acquisition, lifetime value, ratings and reviews, boosting their email budget, and doubling their ROI. To learn how to attend the Study Group,click here.
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