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The blog

Notes on selling digital subscriptions.

Playbooks, analytics deep-dives, and interviews with creators who ship. Written by the team, not outsourced.

Engineering Apr 16, 2026 · 12 min read

Why we built Content Vault on top of Shopify checkout

Every digital platform we looked at had a custom checkout that broke native conversion optimization. We bet on the platform instead.

SS

Seva Safris

Founder

Playbook Apr 10, 2026

Drip scheduling for creators who don't like cron

You shouldn't need to understand cron syntax to release a chapter every Monday. Here's how we made it human-friendly.

MO Marina Oh · 7 min
Product Apr 4, 2026

The math behind our new transaction-fee structure

We rethought how we charge at each plan tier and why the 0.50% Plus rate makes more sense than a flat per-transaction fee.

SS Seva Safris · 9 min
Operator Mar 27, 2026

From Gumroad to Shopify: a migration diary

One operator moved 2,400 subscribers, 80 GB of files, and eight years of purchase history in a single weekend. Here's the log.

JP Julian Park · 14 min
Operator Mar 19, 2026

How three music producers turned sample packs into MRR

Monthly bundles, tier gating, and the discovery that subscribers churn half as often when content drops on a fixed calendar.

MO Marina Oh · 10 min
Engineering Mar 13, 2026

Watermarking PDFs without breaking the reading experience

Invisible stamps, visible stamps, and the rendering edge cases that tripped us up before we rewrote the stamper engine.

JP Julian Park · 8 min
Playbook Mar 6, 2026

Pricing your subscription: the 1.5x rule that rarely fails

Charge 1.5x what you'd charge for a single item, release on a predictable cadence, and let compounding do the work.

SS Seva Safris · 6 min
Product Feb 27, 2026

What we changed after our first 500 merchants

Analytics that nobody used, settings that everybody asked about, and the one feature we nearly shipped that would have been a mistake.

SS Seva Safris · 11 min
Guide Feb 18, 2026

The hidden cost of 'free' digital file storage

Bandwidth, egress fees, expiring CDN links, and why 'unlimited' is only free until it isn't. A plain-numbers breakdown.

JP Julian Park · 8 min

Written by operators, not interns.

Monthly notes on subscription metrics, pricing experiments, and what's working for real Shopify merchants. No spam, unsubscribe anytime.