Privacy Policy
JizaiDev ("we") sets out below how personal information is handled in the Shopify apps we provide and on this website (jizai.dev). What each app handles differs, so please also read the individual policy for the app you use.
1. Services covered
This policy applies to all of the following.
Apps still in development are covered by this policy from the moment they are released.
- ClickPost Shipping: A Shopify app that builds Japan Post Click Post CSVs from Shopify orders and writes tracking numbers back to the orders.
- SellRules: A Shopify app for pre-orders, made-to-order, restock notifications and purchase restrictions.
- jizai.dev: This website (product pages, blog and contact form).
2. Information we collect
To provide the apps, we access the following through the Shopify API. How much of it is actually stored differs from app to app.
We never access credit card or payment details, and we never obtain customer passwords.
- Store information: Store name, store URL, plan, and the owner's email address, name and language setting — what authentication and operation require.
- Product and inventory: Product IDs, variant IDs and stock levels.
- Orders: Order ID, order number, quantities, amounts, shipping details and tracking numbers.
- Customer information: Names, addresses, email addresses and customer tags, only as far as an app's features require.
- Messages you send us: The text and attachments submitted through this site's form or an app's in-app feedback.
3. How long information is kept
Some data is only processed in passing; some is stored. The difference by app is as follows.
In both apps the Shopify authentication session is kept only while the app is installed, and deleted on uninstall.
- ClickPost Shipping: A generated CSV is held on the server temporarily so it can be downloaded. The download is single-use and the file is deleted once retrieved; a file that is never retrieved becomes invalid after five minutes. Order and customer information is not retained on an ongoing basis.
- SellRules: Email addresses signed up for restock alerts, pre-order and made-to-order order records, the notification delivery log, and a copy of the customer tags used to evaluate purchase restrictions are stored for as long as the features need them. All of it is deleted on uninstall.
4. Why we use it
Collected information is used only for the following.
We never use collected information for advertising or pass it to third parties for marketing.
- Providing each app's features and running the service
- Responding to enquiries and providing support
- Fixing defects, improving features and developing new ones
- Preventing misuse and maintaining security
5. External services
We use the following external services to run the service.
- Shopify: Reading and writing data through the Admin API, webhooks, metafields and Shopify Flow.
- Fly.io: Cloud infrastructure hosting the apps.
- Cloudflare Pages: Serving this website.
- Resend: Sending SellRules notification emails. The recipient address and the email body are transmitted.
- FormSubmit: Delivering this site's contact form. What you enter is forwarded to our email address.
- Support system (desk-api.jizai.dev): Operated by us. Receives and manages feedback sent from inside the apps.
- Google Tag Manager / Google Analytics: Analytics for this website. Measurement happens only with your consent.
6. Cookies and analytics
This website may use cookies to understand how it is used. A consent banner appears on your first visit, and analytics cookies are enabled only if you agree. If you decline, no analytics are collected.
Disabling cookies in your browser does not prevent you from using this site. Inside the apps (within the Shopify admin) we use no analytics cookies of our own.
7. Sharing with third parties
We do not share personal information with third parties except in the following cases.
- Where disclosure is required by law
- Where it is necessary to protect life, health or property
- Where you have given prior consent
8. Deleting your data
Uninstalling an app deletes the data held for that store. On receiving the uninstall notification, SellRules deletes schedules, rules, waitlist entries, delivery logs, templates and the copy of customer tags together.
We also implement Shopify's GDPR / CCPA webhooks (customers/data_request, customers/redact, shop/redact) and respond to deletion requests automatically.
Messages sent through this site's contact form are retained as a record of our reply. Contact us if you would like yours deleted.
9. Cross-border transfers
Because of how our cloud infrastructure and API providers operate, data may be processed on servers outside your country. Safeguards such as SSL/TLS encryption in transit apply in those cases as well.
10. Security
We work to prevent unauthorised access, data loss and leakage through SSL/TLS encryption on all communication, restricted system access and server hardening.
11. Your rights
Regarding your own personal information, you may request the following.
To exercise any of these, please contact us at the address below.
- Disclosure of the personal information we hold
- Correction of inaccurate information
- Deletion of your information
- Restriction of processing
12. Changes to this policy
We may update this policy from time to time as features are added or the law changes. We will announce significant changes on this site or inside the apps.
13. Contact
For questions about this policy, please get in touch.
JizaiDev Support
Use the contact form on this site, the form inside each app's admin, or the support link on the Shopify App Store listing.
Last updated: August 23, 2026