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Direct Mail Marketing Incrementality

Mastering Incrementality Across Marketing Channels

11 Min Read
by Amanda Boughey

Sometimes it feels like your marketing data is plotting against you, adding just enough twists to make you question whether your latest campaign was a genuine success or merely a stroke of luck. Sound familiar? It should! You’re not the only one facing this challenge. What you need is a little something we like to call: incrementality analysis. Besides making you feel really, really smart when you say it, it gives you the structure you need to untangle your data and understand what’s truly driving results.

(Need a refresher on incrementality? Check out our guide.)

Performing incrementality analysis is a bit like pouring through your data like a detective in a mystery novel. You’re the sleuth piecing together clues to solve age-old questions like “Did that ad actually move the needle? If so, how much?” It’s part strategy, part science, and yes, sometimes a bit of a guessing game. It challenges us to look beyond the surface, digging deeper into the why and how of campaign results. 

In this article, we’ll cut through the technical jargon and show you practical ways to apply these insights, turning confusing data plots into clear action points. Time to bust out your megaphones… 📣 Let’s get ready to demystify your dataaaaaaaaaa!

Tackling the Complexities of Measuring Incrementality

Measuring incrementality involves pinpointing the specific effects your marketing efforts have on big-picture concerns, like business growth. You’ll need to dive deep into complex data sets and directly link each component of your campaigns to their outcomes. Sure, it’s a demanding task that calls for thorough analysis and a strong understanding of data dynamics, but it’s hella rewarding. 

Getting to the bottom of your data allows you to clearly demonstrate what you’re doing right, how it’s contributing to your company’s bottom line, and why you deserve that promotion. I mean, how many other people on your team are doing “incrementality analysis?!” Fuhggedaboudit!

Protect Data Integrity at all Costs, Even When Incrementality Challenges Arise

There’s a time to be footloose and fancy free with data. This isn’t one of those times. Data integrity must be a top priority if you’re going to accurately measure incrementality across your marketing efforts. Here are the key steps to safeguard your data integrity and keep your standards high:

  • Robust data protocols: Begin by setting up data protocols that nip inaccuracies and corruption in the bud. Think of this as a foundational step for keeping your data reliable for as long as it lives, whether it’s just a few minutes or several years.
  • Comprehensive data collection: Collect alllll the data. Make sure your data collection processes are exhaustive and systematic. It should be clean, well-documented, and consistently formatted so you can do accurate analysis later on.
  • Regular audits and checks: Implement regular audits and checks as often as you check your mail (that should be daily). Remember, you must safeguard your data integrity. These serve as crucial checkpoints that validate the accuracy and reliability of your data, helping to catch and rectify errors before your CFO says, “Why does the data look different this week?” 

Keep a close eye on your data. With consistent and thorough validation, the insights you gain from your incrementality analysis are most likely to be rock-solid. If you make data hygiene and maintenance a part of your regular routine, you’ll end up with a reliable foundation for accurately measuring the impact of your marketing strategies on business growth.

Looking for — and Finding — Meaning in Incrementality Data

Analyzing incrementality data requires a detailed examination of how marketing actions influence business outcomes. The point is to see if observed changes in consumer behavior directly result from your campaigns or if they are influenced by other factors. Using tools like statistical methods and control groups is like solving a puzzle with the right pieces — it helps you pinpoint exactly how your marketing impacts customer behavior.   

Making sense of the data involves focusing on patterns and trends that are closely tied with your campaign periods and adjustments. A close look will identify causation, not just correlation. Afterwards, you can fine-tune your marketing strategies to be predictively effective, meaning your campaigns will not only be noticed — they will be influential.

Case Studies that Illuminate the Path to Testing Success  

Incrementality testing over time reveals which marketing channels deliver the most value and where to focus for maximum impact. These success stories show how Postie helped brands turn raw data into actionable insights. 

Case Study 1: A Sleep Brand Wakes Up to Big Wins

A leader in the sleep industry partnered with Postie to measure lift — how much better campaigns perform compared to doing nothing at all. By testing different audiences and creative approaches, a look across your campaigns will reveal key metrics such as return on ad spend (ROAS) and cost per acquisition (CPA), helping the brand identify its most effective tactics. For the sleep company, data-driven insights into incrementality provided a clearer path for optimizing future campaigns.

Case Study 2: A Food Delivery Brand Reconnects with Old Friends

A food delivery service wanted to win back lapsed customers, so Postie created two audience segments: Abandoned Carts and Cancelled Subscriptions. Incrementality testing revealed which audience was more responsive and cost-effective, helping the brand fine-tune its approach. The data also revealed that the Abandoned Carts group had a lower CPA, making them the more profitable audience to pursue. With this intel, the brand fine-tuned its strategy to focus on the audience that delivered the best bang for their buck.

Incrementality testing revealed that sustained engagement with a lapsed customer segment over time produced a lower CPA, helping the brand refine its long-term channel strategy.

Mastering the Art of Incrementality Testing 

If incrementality is the cool kid in the marketing class, incrementality testing is the way to get into the cool kid club. It’s how you measure the effectiveness of your marketing campaigns and gain the insights needed to refine them over time. Once you understand how and where you’re getting incrementality benefits, you can start applying them intentionally and getting those sweet, sweet results.

Choose Your Fighter: Campaign-Specific vs. Universal Holdouts  

There are two main fighters in the ring of incrementality testing: campaign-specific and universal holdouts. But only one is going to lead to an understanding of incrementality and long-term success.

  • Campaign-specific holdouts (your go-to for quick punches) break down the individual effects of a single campaign. By comparing results against a control group that hasn’t been exposed, this approach acts like an A/B test to isolate specific tactics. Use it for detailed insights into campaigns with distinct objectives and target audiences. If your CEO is pushing for answers to a one-time campaign question, this fighter delivers the knockout.
  • Universal holdouts (the heavyweight champion for long-term strategy) focus on general trends and broader business objectives. It provides a framework for consistent measurement and strategic planning, helping you align your marketing efforts with big-picture goals.   

When it comes to incrementality testing, long-term strategies reign supreme. Universal holdouts provide the consistency and scope needed to deliver statistically significant results, making them the gold standard for understanding the true value of a marketing channel. While campaign-specific testing can offer some insights, it’s often too narrow to produce reliable or actionable findings. You should instead focus on broader, channel-wide testing over time to uncover patterns that provide a deeper understanding of your overall marketing impact.

Don’t Forget to Leverage Advanced Technologies 

Today’s analytics work requires a lot of number-crunching, but not everyone is a numbers wizard and that’s okay. That’s why we recommend using advanced analytics tools to make incrementality testing feel less like rocket science and more like a cheat code. For instance, Postie lets you dive deep into your campaign data to precisely measure lift, uncover patterns, and identify what’s really driving results. Our platform uses machine learning and real-time analytics to uncover insights you can act on to make smarter marketing decisions. 

To stay ahead of the curve, marketers are using these advanced technologies to segment their audience with precision and pinpoint the exact impact of specific variables in their campaigns — right down to the individual customer. They also rely on these tools to make adjustments on the fly. For example, Postie’s integration of A/B testing frameworks and multivariate analysis tools enables real-time adjustments to campaigns, making every marketing move data-driven. The result is an optimized strategy that is fine-tuned for maximum ROI (and happiness, of course).

Heed Best Practices to Achieve Flawless Incrementality Testing 

Achieving perfection in incrementality testing might not land you on the cover of your favorite magazine, but it’s just as rewarding for your marketing outcomes. If you want your marketing efforts to shine like a diamond, adopting these best practices can make all the difference. Here are four strategies to help you deliver results that sparkle.

  • Set clear goals: Establish clear, achievable goals for your incrementality testing. Winging it might work for karaoke, but it’s a disaster for data. You want to make sure you have a defined path and purpose that guides all subsequent testing decisions.
  • Choose the right metrics: Select metrics that genuinely reflect the impact of your campaigns (not just vanity numbers that make you look good in meetings). Pick indicators that are most relevant and effective for measuring your actual success.
  • Validate your data: Regularly verify the reliability of your data collection methods and the consistency of your results. Think of this as quality assurance for your data to maintain accuracy. Bad data is like a bad haircut — everyone notices, and it’s hard to fix later.
  • Stay flexible: Be ready to modify your strategies based on the insights you gather. Like yoga, staying flexible helps you adjust to changes with ease and refine your approach for better results. The alternative is clinging to a rigid plan while everything falls apart around you.

Make these practices part of your routine, and your incrementality testing will go from “just another metric we aren’t sure we understand” to a secret weapon for smarter decision-making. Once you master them, your marketing strategies will become so adaptable and responsive that your competitors will wonder what they missed.

Stay Ahead: Future-Proof Your Testing with AI and Automation

Integrating AI and automation into incrementality testing isn’t just about keeping up — it’s about staying ahead. AI tools can sift through mountains of data faster than any human, uncovering patterns and anomalies in seconds. Automation handles the repetitive tasks, freeing you to focus on strategy instead of getting buried in spreadsheets. It’s like having an always-on marketing assistant, tirelessly optimizing your campaigns and delivering insights you can act on with confidence.

AI and automation make marketing work smarter, not harder.  Once you embrace these technologies, they’ll streamline your processes and help you build a resilient framework that adapts to future trends.  

Choose Your Software Tools Wisely 

Not all software tools are created equal. The right ones make testing faster, smarter, and far less stressful. Tools that automate tasks like data segmentation, statistical modeling, and real-time optimization don’t just save time — they improve accuracy. With features like A/B testing frameworks and multivariate analysis, you can tweak campaigns on the fly to make them data-driven and more impactful. 

Embrace the Future of Incrementality Testing 

AI isn’t just a tool; it’s becoming the backbone of incrementality testing. As advancements continue, AI will go beyond diagnostics, turning testing into a predictive powerhouse. Imagine adjusting campaigns before they even launch based on AI-generated insights. The future promises more personalized strategies, sharper predictions, and marketing that’s as proactive as it is effective. It’s time to embrace what’s next.

Leverage Postie for Enhanced Incrementality Testing

Let’s face it — incrementality testing can feel overwhelming, but at Postie, we’ve made it simpler and more effective. With our unique approach, you can dive deep into your campaign data to precisely measure lift, uncover patterns, and identify exactly what’s driving your results. We enable brands to measure incrementality at scale, ensuring you gain meaningful insights into the value of your marketing channels over time — not just for individual campaigns.

What sets Postie apart is how we combine traditional direct mail with the precision of digital tactics. Our platform uses cutting-edge machine learning and real-time analytics to give you insights you can actually act on. Whether it’s fine-tuning your strategies or making real-time adjustments, we help you stay one step ahead.

Take the next step today and see how our expert strategies can elevate your targeting and deliver impactful results throughout the year. Partner with Postie, and let’s transform your marketing campaigns into a model of efficiency and effectiveness, setting new benchmarks in your industry.

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