Turn your campaigns into revenue experiments
Test individual content blocks across email, push, SMS, and in-app messages. Identify winners with statistical confidence and measure results in incremental revenue.
14-day free trial. No credit card required.
Subject Line Test #12
Sample size: 1,240 of 5,000 target
62% confidence
CTA Colour Test (Blue vs Green)
Conversion rate: 2.7% vs 2.6% (control)
88% confidence
Hero Variant B (Urgency)
Conversion rate: 3.1% vs 2.5% (control)
+£14,200 additional revenue
97% confidence
The Problem with Traditional CRM Testing
Most CRM teams are under constant pressure to test, but the tools they rely on make meaningful testing nearly impossible. Frequentist statistics, whole-message experiments, and siloed results mean most tests end inconclusively, and teams eventually stop trying.
Most Tests Never Reach a Conclusion
Traditional tools use frequentist statistics that demand large, fixed sample sizes calculated upfront. For most CRM audiences, that means weeks of waiting for a result that comes back inconclusive. Teams either ignore the statistics and pick whichever variant looks better, or stop testing altogether.
Whole-Message Testing is Low Resolution
Testing entire messages forces multiple creative decisions into a single experiment. When performance changes, you cannot isolate what actually drove the outcome.
Results Do Not Compound
Each test lives and dies within a campaign. There is no persistent memory of what content strategies work best over time, and no way to carry learnings across channels.
Metrics Do Not Reflect Business Impact
Winning open rates or click-through rates does not guarantee winning revenue.
How liftstack Works
Four steps from content variants to revenue-denominated verdicts.
Create Snippets
Build a library of content variants for any channel: email subject lines, hero blocks, CTAs, push notification titles, SMS body copy, in-app message content. Each snippet has a control and one or more alternative variants.
Build Your Campaign
Connect snippets to slots in your message. Choose your channel (email, push, SMS, in-app), your primary metric, and how traffic is allocated. Group campaigns across channels for coordinated cross-channel tests.
Assign and Send
liftstack pulls your audience from your CRM platform, assigns each recipient a variant per slot, writes the assignment to their profile as custom properties, and generates a conditional template in your platform’s native syntax. Your platform sends the message as normal.
Read Your Verdict
After sufficient data, liftstack delivers a clear verdict with revenue impact: winner found, no meaningful difference, or more data needed. No statistical expertise required.
See your potential revenue uplift
Adjust the inputs to match your business. The results show the potential revenue impact of a 12% relative improvement to your campaign conversion rate.
If liftstack improves your conversion rate from 0.10% to 0.11%:
+£2,640/month
+£31,680/year
That's 5x your liftstack investment on the Growth plan.
What Makes liftstack Different
Decision Level Testing
Optimise individual content decisions rather than entire messages. Test a hero headline, a CTA, and a push notification title independently, without creating separate message versions.
Multi-Channel from Day One
Test content across email, push notifications, SMS, in-app messages, and content cards. Same statistical rigour, same snippet library, same verdicts. Coordinate tests across channels with campaign groups.
Revenue Denominated Outcomes
Measure success in incremental revenue rather than engagement metrics. Every verdict tells you how much additional revenue the winning variant generated, and that is the number you show your CEO.
Compounding Content Memory
Build persistent intelligence about what works for your audience. Snippets accumulate performance data across campaigns and channels. After five campaigns, you know that "urgency tone wins 4 out of 5 times in hero blocks for this audience."
How liftstack Compares
See where liftstack fits between native CRM testing and enterprise AI platforms.
| Native CRM A/B Test | liftstack | Enterprise AI | |
|---|---|---|---|
| Test level | Whole message only | Individual content blocks | Individual elements |
| Channels | Email only (usually) | Email, push, SMS, in-app, content cards | Varies |
| Variants per test | 2–4 per message | 2–5 per slot, multiple slots | Unlimited |
| Statistics | Frequentist significance | Bayesian with plain-language verdicts | Black-box ML |
| Metrics | Open or click rate | Open, click, conversion, revenue per exposure | Varies |
| Uplift measurement | Basic percentage difference | Revenue-denominated with confidence ranges | Varies |
| Cross-campaign learning | None | Built-in snippet performance library | Platform-dependent |
| Cross-channel testing | None | Campaign groups with shared assignment | Platform-dependent |
| Smart allocation | Auto-send winner | Thompson Sampling with transparency | Reinforcement learning |
| Pre-test planning | None | Built-in test calculator with sample size, MDE, and duration estimates | Varies |
| Segment analysis | None | Per-segment variant breakdown with auto-detected properties (Growth+) | Platform-dependent |
| Long-term value tracking | None | Cohort LTV monitoring at 7/14/30/60/90 days (Scale) | Custom analytics required |
| Audience requirement | 10,000+ for reliable results | Depends on conversion rate (adapts automatically) | 100K+ typically |
| Marketer control | Full | Full (you see every decision) | Low (trust the algorithm) |
| Setup complexity | Built-in | Connect API, create snippets, send | CDP + data warehouse + onboarding |
| Price | Included in platform | Mid-market SaaS | Enterprise sales-led |
Test level
Channels
Variants per test
Statistics
Metrics
Uplift measurement
Cross-campaign learning
Cross-channel testing
Smart allocation
Pre-test planning
Segment analysis
Long-term value tracking
Audience requirement
Marketer control
Setup complexity
Price
Works with the tools you already use
liftstack connects via API to read audience profiles, write custom properties, and receive engagement events across all channels. No workflow replacement required.
Your team keeps sending through your existing platform. liftstack handles the experimentation layer.
“Designed for DTC and e-commerce brands doing £5M–50M in annual revenue.”
“The same Bayesian methodology used in clinical trials, applied to your content decisions across every channel.”
Start compounding revenue from the emails you already send
14-day free trial on the Growth tier. No credit card required.