The App is a support tool that uses your Shopify order data to automate and streamline shipping work carried out through ClickPost, a service of Japan Post — producing labels and registering tracking numbers. Its main functions are as follows.

• CSV export — Generates a CSV file from your Shopify orders in the format ClickPost requires for bulk registration. The file uses Shift_JIS encoding and CRLF line endings, and follows the eight-column layout defined by Japan Post.
• Address formatting — Splits the address into the four lines ClickPost expects and trims each line to the permitted length. Where a prefecture is stored in Latin script, it is converted to its Japanese form.
• Tracking-number extraction from PDFs — Reads tracking numbers, postal codes and order numbers from the shipping-label PDFs issued by ClickPost and matches them against the corresponding orders. Extraction works by parsing the text embedded in the PDF. No optical character recognition of images is performed.
• Tracking registration and fulfillment — For each matched order, updates the Shopify status to fulfilled and registers the tracking number. The carrier is fixed to "Japan Post" and the tracking URL to Japan Post’s tracking page.
• Shipment notification email — When the above registration runs, Shopify sends the buyer a shipment notification email containing the tracking number. This is always enabled; the App provides no setting to turn it off.

The App depends on the specifications of both Japan Post and Shopify. You use it on the understanding of the following limits and assumptions.

• Per-run limits — A CSV export covers at most 40 orders per run, matching ClickPost’s own bulk-registration limit. PDF uploads are limited to 2 files per run, 10 MB per file, and 80 shipping labels read in total. Tracking registration sends at most 20 entries per request; the screen splits larger batches automatically. There is no monthly cap on how many orders you process.
• PDFs that cannot be read — Tracking-number extraction parses the text inside the PDF. A PDF produced by scanning a printed sheet, or exported as an image, carries no text layer and yields no results at all. Extraction also assumes ClickPost’s standard layout of four labels arranged 2×2 on an A4 page.
• Dependence on external specifications — If Japan Post changes the CSV format, the number of columns or the per-submission limit, or changes the layout of the shipping-label PDF, the affected function may stop working correctly until we adapt the App. Changes to Shopify’s Admin API can have the same effect.
• Character conversion — Because the CSV is written in Shift_JIS, emoji and certain symbols that the encoding cannot represent are substituted. Where an address exceeds the per-line limit, the excess is truncated. You are responsible for checking the contents of the exported CSV.

In using the App, you agree to the following.

• You hold legitimate administrator rights over the Shopify store on which the App is installed.
• When using data the App extracts or generates (CSV files, tracking numbers and so on), you comply with Japan Post’s terms of service, applicable shipping law, and Shopify’s platform terms.
• You will not use the App for fraudulent purposes (such as deliberately registering tracking numbers that do not exist), for unauthorised access, or in ways that place an excessive load on our infrastructure.
• Duty of final verification — Extracting tracking numbers from PDFs is an automated process. Depending on the label’s layout and contents, a tracking number may fail to be read, or may be matched to the wrong order. In particular, where the order number cannot be read and matching falls back to the postal code alone, there is room to confuse two different orders sharing that postal code. Before running the registration, you are responsible for checking with your own eyes that each tracking number is matched to the correct order.

• We may add to, change or deprecate the App’s UI, functions and specifications without prior notice.
• If we discontinue the App itself for our own reasons, we will, in view of the impact, notify you at least 30 days before the service ends, through Shopify’s notification system or the App’s information pages at jizai.dev.

These Terms and any legal question concerning use of the software are governed by the laws of Japan. Any dispute arising between us and you in connection with the App shall be subject to the exclusive jurisdiction of the Tokyo District Court as the court of first instance.

For questions about how the App behaves, or about these Terms, please use the contact route below.