The challenge
An online upskilling platform running 12-week paid analytics cohorts was hitting 34% completion — industry-good but commercially painful because the upsell to advanced cohorts only fired on completion. Drop-offs spiked at week 3 (overwhelm) and week 8 (project fatigue). The community team did not have bandwidth to message every at-risk learner.
How we deployed
- Tracked learner activity events into MoEngage — login frequency, video completion, assignment submission.
- Triggered AI-personalised WhatsApp nudges to learners 48 hours past their last activity.
- Ran a structured re-engagement conversation — diagnose blocker, offer mentor session, surface peer cohort.
- Booked at-risk learners into a 15-min Zoom mentor call inside the chat, no form required.
- Sequenced weekly progress recap to every active learner — what they completed, what is next, peer rank.
- Escalated learners with payment-related drop signals to the success team for retention offers.
What changed
- 2,800 at-risk learners reactivated across 4 cohorts in the first 6 months.
- Cohort completion lifted 41% — the upsell engine doubled in volume.
- Learner NPS climbed 19 points on the cohorts that hit the new nudge sequence.
- Mentor calls booked grew 3.4x without adding mentor headcount.
- Payback on the deployment hit on day 21, paid for by upsell volume alone.
"We used to write off week-3 drop-offs as personal motivation issues. Turns out most of them just needed someone to ask "what is blocking you" on WhatsApp at 9pm."
— VP Product · Online Upskilling Platform