James Dunford Wood
Posted 19 April 2017

Ecommerce Customer Metrics, and How Marketers Can Move Them

key customer metrics for ecommerce marketers Two of the most common questions I get asked by online retailers I work with are:

“What customer metrics should I be tracking?”

“Which ones should I be looking to influence?”

Typically most ecommerce managers and digital marketing managers will be tracking top line metrics like revenue per marketing channel and conversion rate, but it is surprising that the ones who are tracking metrics such as repeat rate, new customer revenue and time to second purchase are still in a minority.

These are all crucial metrics to be looking at, and if you can optimise them the long term health of your business can be greatly enhanced.

So let’s break them down.

Metric 1) Repeat rate

This is one of the most important retention metrics of all (alongside customer lifetime value), but one which can be very misleading if not calculated properly.

The simplest way to calculate this is by taking all your customers and working out what percentage have purchased more than once. The problem with this is that many of them may not have purchased for many years, and it can also be negatively influenced by spikes in acquisition activity (because customers you have acquired in the recent past may not have had a chance to repeat).

A more accurate way to look at it is through cohort analysis; take a cohort of customers acquired during month X and look at the repeat rate of that group of customers six months later (month X+6) and compare it to that same month for the cohort of the previous year (e.g. comparing customers acquired in June 2016 vs customers acquired in June 2017).

You will get seasonal variations (typically customers acquired over Christmas will have a lower repeat rate than customers acquired in June), but averaged out over a 12 month period this gives you a pretty accurate view of your ‘12 month rolling repeat rate’, and how it is moving over time. A variation of this is you might want to work it out after 12 months, and not six months.

Finally, you should consider working out your retention rate – a refinement of your repeat rate that takes into account loyalty. To calculate your retention rate, look at all your customers who shopped for the first time 12 to 24 months ago and how many of out those shopped again in the last six months. This timeline is just an example, but you get the idea on how to see if customers acquired a while ago still come back and shop with your brand.

How to increase this metric:

  • Post first purchase campaigns: To turn first-time buyers into repeat customers, wait until a product has been delivered before getting in touch to: ask for any feedback, thank that customer for buying with you and/or cross-sell complementary products.
  • ‘At risk’ winback campaigns: From a cheeky discount to a re-permission email, there are a number of tactics that you can use to get old customers engaging (and buying) again. To read more about the art of sending great win-back email campaigns, check out our blog post here.
  • Replenishment campaigns: Designed for customers who have bought consumable products, replenishment campaigns aim to encourage repeat purchases. The timing of a replenishment campaign should be based on the average repurchase time for the product that has been bought.
  • Personalised newsletter: By using segmentation and/or dynamic content, marketers can ensure recipients receive relevant email content, which should in-turn inspire them to shop.

Bonus metric: Average time to second order

In addition to pushing up your repeat and retention rates, all of the above campaigns can also have the effect of decreasing your time to second order. This is another important metric to track on a monthly basis, to measure the effectiveness of your retention activity: how effective are your marketing efforts to get your one- time shoppers to come back and buy again

Metric 2) Share of loyal shoppers

It’s very common to see repeat percentages steadily rising after the second order—so, for example, if 30 per cent make a second order, of those, 40 per cent might make a third order, and 50 per cent a fourth order. So tracking these metrics and trying to push them up further will have a material effect on your business.

customer metric in ecommerce_repeat rate

One metric to track is your total number of loyal customers and how effective you are at turning any customer into a loyal shopper, your ultimate goal being to turn every customer in your database into one (i.e. 100% share of loyal shoppers in your database). There are multiple ways you might define this, but as a suggestion, we often recommend looking at customers who have shopped at least twice before a certain date (e.g. six months ago) and at least once in the past six months. They may not all be VIPs in terms of spend amounts, but they have certainly demonstrated loyalty, and are currently still active.

Campaigns to influence loyalty and create VIPs

  • Loyalty recognition: Show your most loyal customers you care by offering them a special discount or just a simple thank you email.
  • VIP recognition:  It’s also important to acknowledge how important your VIP customers are to you. However, this segment of customers is more likely to respond to direct mail or early-access to a sale or collection than discounts.
  • Loyalty programmes: Creating special programmes that focus on rewarding your best customers is a great way of fostering brand loyalty.
  • Rewards not incentives: e.g. ASOS’s ‘earn while you shop’ scheme fosters loyalty through reward,
  • Anniversary emails: Celebrate the anniversary of your customer’s first ever purchase.
  • Personalised newsletter: Again, by including relevant products and content in your newsletters, your loyal customers are more likely to stay engaged (and more likely to spot products they’d like to buy).

Metric 3) Subscriber Activation Rate

“Number of new customers” is a metric that everyone will be covering, but what are the best ways to increase it , especially for ‘leads’ for whom you have an email address but they are not customers yet?

The subscriber activation is the percentage of email subscribers turned into customers. Similar to repeat rate, you can calculate it across your database or using cohorts (cohort based on the month they signed up).

Strategies for turning subscribers into customers:

  • Browse abandonment campaigns: retarget those who visit your site with the products they’ve viewed.
  • Segment your newsletter on browse activity: This will ensure new subscribers are sent content that actually resonates with them.
  • Welcome series: Once a new subscriber has signed up, you can boost your chances of converting them by sending a friendly, relevant and helpful welcome campaign. Check out this blog post for some welcome email inspiration.

Beware of incentives.

It is very tempting to offer incentives to increase customer growth, but also dangerous, as you may find you attract customers who are barely profitable, and they may only repurchase when a promotion is on.

Metric 4) Average order value

Here are a few strategies you can use to boost your AOV.

  • Use segmentation: AOV across your whole customer base is very crude – segment it by customer group based on categories of purchase. Analyse your data by category of purchase, and work out what upsell or cross-sell you can offer to be the most relevant.
  • Product recommendations: Add cross-sell or upsell product recommendations to your transactional emails.
  • Get the timing right: When people buy on promotion, send a follow up within an hour offering them a further, complementary promotion for a limited time window, in order to add to their basket and be shipped at the same time. The chances are if people have got a deal, they might be tempted with another one while they are still hot to trot.

So, to summarise, here’s a list of the metrics we’ve covered in this post.

  • Increased repeat rate (and shorter time to 2nd order)
  • Increase loyal customer base
  • Increase new customer growth
  • Increase in AOV

But there are two other metrics you should be checking on a regular basis to see how effective your lifecycle marketing strategy is.

Metric 5) New vs repeat revenues

The first is the balance between new customer and repeat customer revenue, and is effectively a check on your acquisition and retention activity to make sure you are still driving down the road in a straight direction.

For example, we typically see the percentage for new revenue to be somewhere between 30 per cent  and 65 per cent of all revenues generated on a monthly basis. If it is below 30 per cent,  this can be a sign that you are relying too heavily on your existing customers, and not acquiring enough new ones. If it is above 65 per cent, this can be a sign that your retention strategy is not quite working properly, and that you are not seeing enough of your customers coming back.

You should also check what new customers are buying, and what sources are driving them, as this will give you valuable intelligence to power your acquisition strategy.

Metric 6) Net Customer Growth – the Customer Funnel

This metric is the ultimate indicator of the health of your customer database. It measures how many customers you are acquiring (the top of the funnel) against the number you are losing (the bottom of the funnel). To check the current health of your customer database:

  1. Count  the number of new customers you acquired in the last quarter.
  2. Add to the number above the number of shoppers who have not shopped for over a year before last quarter but who just shopped in the last quarter.
  3. Subtract the number of customers who have not shopped for 12 month in that last quarter.

This number should be healthily positive over a three month period (looking at it monthly can be overly skewed by seasonal variations and anomalies). If it is a less than 20 per cent difference, you are in danger of stagnating. If it is even, you are losing as many customers as you are acquiring, and your business may be in trouble, so do some investigating. If it is negative, you most likely will need to take drastic remedial action!

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