Your Substack subscribers, in Kit — automatically.
Every new free, paid, or founding subscriber lands in your email provider within about 30 minutes. No CSV exports, no Zapier, no copy-paste Sundays.
Card required for the trial. Cancel anytime. A dedicated browser extension does the fetching — nothing shared with any other product.
Three steps, then never again
One-click Kit OAuth. Credentials stay encrypted on SubSync's servers — never sent to the extension.
Pick a Substack publication, choose a Kit form and tags, and turn on tier tags — free, paid, founding.
New subscribers sync every ~30 minutes. Failures retry themselves, and a full history shows every delivery.
Free, paid, and founding subscribers arrive pre-tagged, ready for Kit automations and sequences.
One click imports your existing subscribers — duplicates are detected, nothing is added twice.
Delivery continues server-side with retries even if Chrome closes. A watermark makes every re-check safe.
Run history with per-subscriber outcomes — fetched, delivered, failed — with one-click retries.
Simple pricing
One plan. Everything included. Start with a 3-day trial — card required, cancel anytime before it ends.
Unlimited publications, extension sync, and Kit delivery. Billed monthly.
Start free trialSame full product for a lower monthly effective rate. Billed once a year.
Start free trialKit today. More on the way.
Built provider-agnostic from day one — new destinations plug in without touching your setup.
Own your list everywhere it lives.
Your Substack audience is yours. Keep a living copy in the email tool you'd use if everything else disappeared tomorrow.
Start 3-day free trial