Lifecycle Marketing Glossary

35 terms every CRM and retention marketer should know. Plain language, no filler.

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Average Order Value (AOV): The average revenue per transaction. One of three levers for growing revenue alongside purchase frequency and customer count.

Behavioral Trigger: An automated message sent in response to a specific customer action: a purchase, a cart abandonment, a browse event, a subscription change. The foundation of lifecycle automation.
Broadcast (Campaign Send): A one-time message sent to a defined audience at a scheduled time. Used for promotions, announcements, and content distribution.

Churn Rate: The percentage of customers who stop buying or cancel within a given period. Calculated as lost customers divided by starting customers. The single most important retention metric.
Customer Lifetime Value (CLV): The total revenue a customer generates over their entire relationship with your business. Can be calculated historically or predicted using statistical models.
Cohort Analysis: Grouping customers by their acquisition date (or another shared attribute) and tracking their behavior over time. Reveals retention trends that aggregate metrics hide.
Customer Health Score: A composite metric that combines engagement signals, purchase behavior, and support interactions to estimate a customer's likelihood of staying or leaving.
Cross-Channel Orchestration: Coordinating messages across email, SMS, push, in-app, and other channels based on customer behavior and preferences. The goal is a coherent experience, not parallel campaigns.
Consent Management: The system that tracks, stores, and enforces customer opt-in and opt-out choices across channels. Legal requirement and operational necessity.
Customer Data Platform (CDP): A system that unifies customer data from multiple sources into a single persistent profile. Used for segmentation, personalization, and audience activation across channels.

Deliverability: The ability of your emails to reach the inbox rather than the spam folder. Affected by sender reputation, authentication, content quality, and list hygiene.

Engagement Window: The time frame during which a customer is considered "active" based on opens, clicks, purchases, or other behavioral signals. Varies by business model and purchase cycle.

Flow (Automated Sequence): A series of messages triggered by a customer event or segment entry. Runs continuously without manual intervention. Examples: welcome series, post-purchase, win-back.
First-Party Data: Data collected directly from your customers through your own channels: purchase history, email engagement, site behavior, survey responses. Increasingly valuable as third-party cookies disappear.

Holdout Test: An experiment where a randomly selected control group receives no message. Measures the true incremental impact of a campaign by comparing treated vs. untreated groups.

Incrementality: The additional revenue or conversions generated by a marketing action that would not have happened without it. Holdout tests are the gold standard for measuring it.
Identity Resolution: The process of connecting multiple identifiers (email, device ID, phone number, cookie) to a single customer profile. Critical for cross-channel personalization.

LTV/CAC Ratio: Customer Lifetime Value divided by Customer Acquisition Cost. Indicates whether your acquisition spending is sustainable. A ratio below 3:1 usually signals trouble.

Marketing Qualified Lead (MQL): A lead that meets predefined criteria (behavior, demographics, engagement) indicating they are ready for direct sales or marketing outreach.

Predictive CLV: A forward-looking estimate of how much a customer will spend, built from purchase history, engagement patterns, and demographic data. Used for budget allocation and acquisition targeting.
Payback Period: The time it takes for a customer to generate enough revenue to cover their acquisition cost. Shorter is better. Directly affected by retention and average order value.
Progressive Profiling: Collecting customer data gradually over time rather than all at once. Each interaction captures a small piece of information, building a richer profile without creating friction.
Preference Center: A page where subscribers manage their communication preferences: frequency, channels, content topics. Reduces unsubscribes by giving customers control.

Quiet Hours: Time windows during which no messages are sent, typically overnight. Required by SMS regulations (TCPA) and a best practice for all channels.

Reactivation Rate: The percentage of lapsed customers you bring back into active purchasing. Measures the effectiveness of your win-back programs.
RFM Segmentation: A scoring model that ranks customers by Recency (last purchase), Frequency (purchase count), and Monetary value (total spend). Tells you who matters most and who is slipping away.
Retention Curve: A chart showing what percentage of a cohort remains active over time. A flattening curve means you have a retention floor. A continuously declining curve means you have a problem.
Repeat Purchase Rate: The percentage of customers who make more than one purchase. The most direct measure of whether your retention programs are working.

Suppression List: A list of contacts excluded from receiving specific messages. Used for compliance, deliverability management, and preventing message fatigue.
Sender Reputation: A score assigned by mailbox providers based on your sending behavior: complaint rates, bounce rates, engagement signals, and authentication. Determines whether your emails land in the inbox.
SPF/DKIM/DMARC: Email authentication protocols. SPF validates the sending server, DKIM adds a cryptographic signature, and DMARC ties them together with a policy for handling failures. All three are required for good deliverability.
Send-Time Optimization: Using machine learning to deliver messages when each individual recipient is most likely to engage. Works best with large datasets and consistent sending patterns.

TCPA: The Telephone Consumer Protection Act. US federal law governing SMS and voice marketing. Requires express written consent before sending marketing texts. Violations carry fines of $500 to $1,500 per message.

Win-Back Campaign: A targeted sequence of messages designed to re-engage customers who have lapsed. Usually combines a reminder, an incentive, and a final attempt before suppression.

Zero-Party Data: Data that customers intentionally share with you: preferences, interests, communication frequency choices. Collected through preference centers, quizzes, and onboarding flows.

Looking for the CRM-specific glossary? CRM Glossary