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How to Build a Churn Early Warning System in Your Existing Stack

You don't need a new platform to predict churn. You need to connect the tools you already have.

Why early warning beats late intervention

Discovering churn at renewal is too late. The customer has already made their decision. The budget has been reallocated. The replacement vendor is in procurement.

Early warning gives you 60-90 days of lead time. That's enough to:

The difference between companies with 85% GRR and 95% GRR isn't better products or better CSMs. It's earlier visibility into risk.

The four signal sources

1. Product usage

What to track:

Where it lives: Amplitude, Mixpanel, Pendo, Heap, or your own product analytics.

Key insight: Absolute usage level matters less than the trend. A customer who uses your product lightly but consistently is healthier than one whose heavy usage is declining.

2. Support interactions

What to track:

Where it lives: Zendesk, Intercom, Freshdesk, or your support platform.

Key insight: A single frustrated ticket isn't a churn signal. A pattern of unresolved issues over 30 days is.

3. Relationship health

What to track:

Where it lives: Salesforce, HubSpot, Gainsight, Outreach, or your CRM.

Key insight: The most dangerous signal is silence. A customer who stops responding entirely is often further down the churn path than one who complains.

4. Commercial signals

What to track:

Where it lives: Stripe, Chargebee, Recurly, or your billing system.

Key insight: Commercial signals are often late-stage indicators. By the time someone asks about cancellation terms, the decision may already be made. Use these in combination with earlier signals.

Building the system: three approaches

Approach 1: Manual scoring (spreadsheet)

Best for: Under 100 customers

How it works: CSMs review each account weekly and assign a Green/Yellow/Red status based on their knowledge of usage, support, and engagement. Track in a shared spreadsheet or CRM field.

Pros: Simple, fast to implement, leverages CSM intuition

Cons: Subjective, doesn't scale, depends on CSM attention, no leading indicators for accounts CSMs aren't watching closely

Approach 2: CRM-based scoring

Best for: 100-500 customers

How it works: Build integrations that pull key signals into your CRM (usage data via API, support metrics via integration, billing status via webhook). Create a scoring formula in your CRM that weights these signals and produces a health score per account.

Pros: More objective, scalable, integrates with existing workflows

Cons: Requires engineering effort to build integrations, CRM formulas are limited, data freshness depends on sync frequency

Approach 3: Customer data platform

Best for: 500+ customers

How it works: Use a dedicated platform that connects all signal sources, builds a unified health model, applies machine learning to weight signals based on historical outcomes, and surfaces risk scores with explanations.

Pros: Most accurate, fully automated, learns from outcomes, scales indefinitely

Cons: Cost, implementation time, requires historical data to train models

The scoring model

Regardless of approach, the scoring model should weight signals based on their predictive power:

Signal Category Weight Key Metrics
Product Usage 30% Login trend, feature adoption, user breadth
Support Health 20% Ticket pattern, resolution, sentiment
CSM Engagement 20% Response rate, meeting attendance, NPS
Champion Status 15% Contact stability, role changes, departures
Billing Health 15% Payment status, term changes, downgrades

Score each signal category 0-100 based on the underlying metrics. Multiply by weight. Sum for a composite score.

Risk tiers and actions

Score Tier Action
80-100 Green Standard engagement, expansion opportunities
60-79 Yellow Increased check-in frequency, value reinforcement
40-59 Orange CSM escalation, executive sponsor engagement, recovery plan
0-39 Red Immediate intervention, save playbook, leadership involvement

Making it actionable

Playbooks by tier

Each risk tier should have a documented playbook — a specific set of actions that trigger when an account enters that tier. The playbook should include who owns the action, what they do, and when.

Alerts

Risk score changes should trigger alerts through channels your team already uses:

Track outcomes

Measure the effectiveness of your system by tracking:

Common mistakes

What good looks like

A mature early warning system delivers:

The build vs. buy decision

Building an early warning system is absolutely possible with your existing stack. The question is whether it's the best use of your team's time.

Building requires: engineering time for integrations, ongoing maintenance as tools change, data science expertise for scoring models, and operational discipline to keep it running.

The question to ask yourself: is churn prediction a core competency you want to build, or a capability you want to leverage so your team can focus on actually saving customers?

See your churn risk across every account, starting today.

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