Customer Marketing KPIs and Metrics for Businesses to Track

You converted a new customer. The product fits. The potential is real.

Then the onboarding email goes out, and your team turns back to pipeline.

That's the gap customer marketing exists to close. But closing it consistently means knowing what to measure. Here are 8 customer marketing KPIs worth tracking if you want to keep customers engaged, loyal, and growing.

• Onboarding calls
• App engagement
• Email engagement
• Retention
• Expansion
• Net Promoter Score (NPS)
• Referrals
• Customer Lifetime Value (LTV)

Onboarding calls

Onboarding is arguably the highest-leverage action you can take in the first days of a customer relationship. It sets expectations, introduces the success team, and gives customers a clear path forward before confusion sets in.

To know whether your onboarding is working, you need answers to a few questions:

• How many calls has your team booked this month?
• Are those numbers trending up or down?
• Are customers who complete onboarding calls more successful over time?

Once you have that data, you can act on it: adjust email sequences to reinforce the value of booking a call, offer incentives, or improve the onboarding material itself. Tracking Onboarding Calls Completed tells your team where to focus and gives new customers a better shot at success.

App engagement

After onboarding, the clearest signal of customer health is what they actually do inside your product. App engagement metrics, such as number of logins and in-app activity, show you which customers are thriving and which ones are quietly drifting toward cancellation.

This is the metric that should anchor your customer marketing meetings. It answers the question that matters most:

What can we do to lead more customers toward consistent, successful engagement?

Every SaaS product has a different engagement baseline. For some, monthly logins signal healthy use. For others, daily activity is the floor. Start by establishing your own baseline, then build from there. The goal is a clear picture of what "good" looks like for your customers, so you can spot problems before they become churn.

Email engagement

Email engagement rate captures how customers respond to your communications: opens, clicks, and unsubscribes. Together, these signals tell you whether your messages are reaching the right people at the right moment with something genuinely useful.

High engagement here is a strong indicator that your customer marketing is working. It means customers are reading what you send, acting on it, and finding value in the guidance you provide. Low engagement, especially rising unsubscribes, is an early warning worth investigating before it shows up in retention numbers.

Retention

Retention is often assigned to the success or support team, and those teams do have the greatest day-to-day impact. But customer marketing owns more of this number than most organizations acknowledge.

Email sequences that bring lapsed customers back into the product, in-app messages that guide users toward key features, and communications that arrive at the right moment in the customer journey: all of these directly affect whether a customer stays or leaves. Pull those efforts away, and retention drops.

Customer marketing should be accountable for Retention Rate alongside success and support, not just as a shared metric, but as a direct measure of whether communications are doing their job.

Expansion

Expansion revenue, whether through upsells, cross-sells, or plan upgrades, only happens when customers already see value in what they have. They need to be engaged, confident in the product, and open to doing more with it.

That's exactly where customer marketing can move the needle. Targeted email campaigns and in-app messages can surface expansion offers to the right customers at the right time. But the logic behind those campaigns, knowing which customers are ready and what to say to them, is something the customer marketing team should own.

The formula is straightforward: the right message, to the right customer, at the right moment. Getting that right is what separates expansion that feels helpful from expansion that feels like a sales push.

Net Promoter Score

Net Promoter Score (NPS) measures how willing customers are to recommend your product to colleagues and friends. Think of it as a direct read on loyalty and satisfaction.

Most organizations run an initial NPS survey to establish a benchmark, then track subsequent surveys to spot shifts in customer sentiment over time. What matters is not just the score, but the trend and what you do with it.

When NPS drops, that is your signal to reach out. Have your customer marketing or success team contact affected customers, understand their challenges, and find out what could be better. Customers who feel heard are more likely to stay.

If you do not yet have an NPS program in place, start there. Run surveys for a few months to build a baseline, then track changes and act on what you learn. A strong NPS practice also reinforces other KPIs: satisfied customers retain longer and refer more.

Referrals

Referrals and NPS are closely linked, but they measure something different. NPS captures intent. Referrals capture action.

A customer who submits a colleague's email to your referral program is doing something that costs them social capital. That makes referral data one of the most honest signals of real satisfaction you can collect.

If you do not have a referral program yet, it does not need to be complex. A simple form your team processes manually is a legitimate starting point. What matters is that you are capturing the data.

One distinction worth making: track referrals from new customers separately from referrals made by long-tenured customers. New customer referrals show how quickly your product delivers value. Repeat referrals from older customers show how well you are keeping up with their evolving needs. Both tell you something the other cannot.

Customer Lifetime Value

Customer Lifetime Value (LTV) measures the total gross profit generated from a customer across their entire relationship with your business.

For SaaS companies, LTV is typically calculated by multiplying the average period payment by the average gross margin by the number of periods the customer is expected to pay. It is the metric that ties everything else together: onboarding, engagement, retention, and expansion all feed directly into it.

A few practices that improve LTV over time:

• Use predictive modelling when you have enough historical data and a complex product offering. It gives you a more accurate forward-looking estimate than simple averages.
• Invest in high-value customers: those who require little support and show strong growth potential. Focus your marketing, sales, and product efforts on attracting and keeping more of them.
• Limit resources spent on customers who cost more to maintain than they generate in revenue. That said, do not move too quickly: small accounts can grow, and word-of-mouth value is real even when direct revenue is modest.
• Improve satisfaction to extend customer lifetime. The longer a customer stays happy, the longer they pay. NPS is a practical tool for measuring that satisfaction.
• Segment your customer base by size, industry, or other relevant dimensions. Segmented LTV data is far more actionable than a single blended average.

Tracking customer marketing KPIs

Building a customer-centric business is harder than it sounds. New pipeline always feels urgent, and the customers you already have can fade into the background.

These 8 KPIs keep your existing customers visible. They give your team a shared, reliable view of what is working, where customers are struggling, and where the next opportunity for growth is sitting. When those numbers are in front of the right people without anyone having to chase them down, staying customer-centric stops being an aspiration and starts being a habit.