Automated retention & review emails for online brands. Connect Cafe24 or Shopify and get started today.
No credit card required · Full access free during beta · Live in 5 minutes
Customer Retention Timeline
Every sequence runs fully automatically once Cafe24 or Shopify is connected.
Customers disappear after their first order
You never follow up after checkout, so hard-won customers rarely come back.
Automated review, replenishment & win-back sequences
Reviews never build up
You miss the right moment to ask, so products stay under-reviewed and new buyers hesitate.
Auto-sent at the ideal moment — 7 to 21 days after delivery
Manual work eats your time
You're exporting CSVs and re-uploading them into another tool, every single day.
One Cafe24 connection, fully automated
Four core features, live today — no vaporware.
Replenishment (25–45 days after delivery) and win-back (60+ days) emails go out automatically, timed to each customer's product and purchase history.
Review requests are sent 7 to 21 days after delivery, right when customers have actually used the product.
A single app install syncs orders and customer data automatically — no more manual CSV exports.
See send volume and segment performance in a single view.
No password sharing — one click through your platform's official OAuth 2.0 login.
Pick a retention or review-request template and tailor it to your brand.
From here it runs on its own — check performance anytime from your dashboard.
Compliance automation built for Korean email marketing requirements — automatically applied before every send.
We never own or continuously harvest your customer database. Retengo works only within the read-only scope you grant, and nothing is retained beyond what's needed.
Automatically tracks Korea's 6-month existing-customer exemption window under the Network Act — contacts past that window are only messaged once marketing consent is on file.
Automatically identifies contacts past their 2-year marketing-consent expiry and stops promotional sends to them immediately — a legal requirement in Korea, handled without manual tracking.
A required "(Advertisement)" label and unsubscribe link are applied automatically based on the campaign type — no manual policing needed.
OAuth tokens and customer data are never stored in plain text — everything is encrypted end to end, with a separate key per merchant.
Revoking access deletes cached data immediately — no support ticket, no approval flow, handled straight from your dashboard.
No messy CSV uploads — real-time sync through a standard OAuth 2.0 REST API. We fully support Cafe24 and Shopify today, with more commerce platforms on the roadmap.
Doing 100+ orders a month and losing track of repeat customers
Struggling to convert new visitors because reviews are thin
Still exporting customer data or managing retention campaigns manually?
Full features for selected early brands.
Limited spots — first come, first served
Start Free Beta →A self-serve plan available anytime after official launch.
Apply now — no billing involved, live once approved
Start for Free* Contact limits count only contacts who have opted in to marketing. Pending or unsubscribed contacts are stored and managed with no limit, regardless of your plan (Terms §5).
Free has no billing — applying starts your approval right away. Starter and Pro billing is still being built, so apply and our founder will reach out personally to walk you through payment and initial setup.
Instead of unverified numbers, here's what Retengo actually automates today.
Repeat-purchase triggers
Review collection
Win-back for dormant customers
Zero manual sending
No. Cafe24 connects through official OAuth 2.0 authentication — your password is never shared with Retengo.
Beta brands get first access to our standard pricing, on the best terms we offer.
Cached data is deleted the moment you disconnect. Retengo doesn't keep a separate copy.
We don't store buyer information — it's fetched from the Cafe24 API only at send time. See our Privacy Policy for exactly what's collected, how long it's kept, and your rights.
Every email includes an unsubscribe link. Clicking it takes effect immediately and removes that contact from future sends — no approval step, no delay.
We fully support Cafe24 and Shopify today. More commerce platforms are on the roadmap.
Designed with MVP-to-scale in mind from day one.
Backend
Next.js (App Router) · TypeScript, modular architecture
Database
Managed libSQL (Turso) — designed for multi-tenant isolation
Email infrastructure
Built on Resend — no self-hosted SMTP, high deliverability by default
Platform auth
Cafe24 OAuth 2.0, automatic token refresh before expiry, 429 back-off retry
Security
AES-256-GCM token encryption, per-merchant data isolation
No credit card, no sales call. Live in 5 minutes.