Upsell & Cross-sell
Post-purchase upgrade nudge for subscriptions
A subscriber just upgraded, added a seat, or crossed a milestone — the one moment they're most open to the next step, and every pound of lift is measured against a holdout.
What it does
When a subscriber takes a positive action — moves to a paid tier, adds a teammate, or hits a usage milestone — they're briefly leaning in, and most products answer with a silent confirmation screen. The agent uses that moment to recommend the next complementary tier or add-on in context, with a one-line reason tied to what just happened. Because expansion revenue is usually claimed rather than proven, every eligible subscriber is randomly split against a control group, so the number you see is the lift the nudge actually created — not the upgrades that would have happened anyway.
How it works
- 1Trigger. a subscription event fires —
plan_upgraded,seat_added, or a usage milestone crossed — or a short follow-up window opens after one. - 2Decision. the agent reads the new plan state, account memory, and the add-on catalog, picks the single best next step, and a judge gates the message for relevance and policy. A slice of eligible accounts is held out and sees nothing.
- 3Action. the recommendation lands in-app, in the confirmation thread, or as a follow-up email — never a discount-first blast, always the reason the next tier fits this account now.
- 4Follow-through. accepted and dismissed offers are written back to memory; if the account downgrades or opens a billing complaint, any queued nudge is cancelled. Lift is reported as the delta between treated and holdout accounts.
Configuration
How the agent is wired for this use case.
plan_upgraded / seat_added / usage_milestone_reached event from the billing platform or product analytics.- Billing platform · read current plan, seats, and add-on entitlements; surface the upgrade path for confirmation.
- Product analytics · read the usage milestone and feature-adoption signals that qualify the account.
- CRM · read account memory (segment, prior offers, expansion history); write back offer outcome.
- Messaging channel · deliver the in-app, email, or chat nudge on the account's preferred surface.
- Experiment service · assign each eligible account to treatment or holdout and log the arm.
What you need
The inputs this use case runs on. Your channels stay yours; the agent supplies the judgment.
Signals
plan_upgraded, seat_added, usage_milestone_reached, plus downgrade and billing-complaint events for cancellation.
Data
current plan and entitlements, seat count, add-on catalog with upgrade paths, account memory and prior-offer history, channel consent state.
Guardrails
judge gating on every unprompted message; randomized holdout assignment; per-account frequency caps; automatic suppression on downgrade, billing dispute, or open support issue; no auto-applied plan changes.
Metrics it moves
- arpuup, by moving accounts to the right next tier at the moment they signal readiness.
- attach-rateup, on add-ons recommended in the post-event window.
- revenue-per-conversationup, and reported as holdout-proven incremental expansion rather than gross attributed revenue.
Related use cases
Post-purchase upsell with holdout proof
the e-commerce receipt-thread sibling of the same holdout-proven motion
Usage-based upgrade nudge
the behavioral version that fires on outgrowing-the-plan signals, not a single event
Annual membership renewal save
keeps the expanded account at its yearly renewal
See it on your own customer journey
Bring one drop-off, one churn cliff, or one silent segment. We will show you what a proactive agent with memory and judgment does with it.
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