One email on day 3 cut my trial chargebacks 40%

One email on day 3 cut my trial chargebacks 40%
Trench note: trial offers print money until the chargebacks roll in and your processor sweats.

Problem: people forgot they signed up for the trial, saw the rebill, hit dispute.

Fix: a plain-text day-3 email. "Hey, your trial of [product] ships soon — here's your tracking, and here's how to manage your subscription." No upsell. Just transparency.

30-day window vs prior 30:
— Chargeback rate 3.1% to 1.9% (−40%)
— Refund requests up slightly (good — refund beats chargeback)
— Processor stopped emailing me

Reminding them protects the offer's lifespan more than any creative. Treat the backend like it matters because it does.

Go test it.