Lifecycle email#82 of 84
Mark LXXXV
The Vesper
Shipped April 25, 2026
What it is
1-day-before-trial-ends nudge. Companion to Mark LXXXIII Mantle (3-day-out). Together they form the standard SaaS pre-billing recovery cadence (3+1). /api/cron/trial-vesper daily 17:00 UTC. Reuses sendTrialEndingEmail; distinct email_key='trial_ending_1day_v1' so the same user can get both Mantle and Vesper touches without dedup collision.
Related — same category
Mark XIX
The Mesh
Weekly parent digest email. Trust-builder for the second audience.
Mark XXVII
The Herald
Transactional email pipeline with delivery + bounce + suppression discipline.
Mark XXVIII
The Signal
Resend webhook apparatus. Open / click / bounce / complain → audit trail.
Mark XXXIX
The Oracle
AI-generated weekly practice plan emailed Sundays. Personalized per player.
See it in the product.
Every Mark exists because string players asked for it. Free demo, no card.