Legal

Privacy Policy

Effective date: 17 August 2026 · Last updated: 6 August 2026

01

About this policy

The data controller for yeih is kikoship UG (haftungsbeschränkt), Friedenstraße 8, 10249 Berlin, Germany, registered at Amtsgericht Charlottenburg under HRB 280527, VAT identification number DE460174950. Contact: hello@yeih.ai.

This policy explains what personal data we collect, why we collect it, how we use it, and what rights you have under the General Data Protection Regulation (GDPR). yeih is directed at users in the European Union. Our infrastructure is hosted in Frankfurt, Germany (AWS EU-Central-1 via Supabase).

02

What data we collect

Account data

When you create an account via Google Sign-In, we receive your name, email address, and profile photo. We do not receive your Google password. Authentication is handled by Google and Supabase Auth.

Inventory data

  • Item name, brand, category, condition, and tag (keep, for sale, insure)
  • Purchase date, purchase price, and currency
  • Serial number (if provided)
  • Notes, photos, and uploaded documents (receipts, PDFs)

Photos and documents are stored in Supabase Storage, hosted in the Frankfurt AWS region.

Email receipt scanning (Nylas)

If you connect a mailbox, Nylas retrieves your messages and each one is checked to determine whether it is a purchase receipt. This check is performed by Anthropic's Claude model and by our own processing rules. We cannot identify receipts without examining messages, so this applies to every message in the connected mailbox, not only receipts.

For messages that are not receipts, we keep a limited record so the same message is not checked twice: the sender, subject, date, the classification result, and technical sender-verification details (DKIM, SPF and DMARC results). We do not retain the message bodies of non-receipt emails. Where a message contains no evidence of a purchase, any extracted details are discarded and no inventory item is created.

Items are added to your inventory only from messages containing evidence of a purchase, such as an order number, line item prices, or an invoice total.

Reading your mailbox and creating items are separate permissions, both controlled in Settings. Turning either off stops future processing.

For iCloud mailboxes, connection uses IMAP with an Apple app-specific password rather than the hosted sign-in flow used for Gmail and Outlook. The password is passed to Nylas, which uses it to connect to Apple's mail servers on our behalf. yeih does not store it: we keep only the connection reference and the mailbox address.

Disconnecting your mailbox does not delete anything. It stops future processing and removes our access to your email account, but the records described above, and any items already created, remain in your account. Deleting your yeih account deletes them.

These records are kept for as long as your account exists.

De-identified product records

When an item is sold or deleted, yeih keeps a de-identified record of what the item was, what was paid for it, and what it was valued at. This record carries no link to your account: no user identifier, no item identifier, no serial number, and no photos or documents. Dates are reduced to month precision.

These records are used only in aggregate, to improve the accuracy of our valuations. Aggregate figures are shown only where at least five records exist for the same product, so no single record can be singled out through them.

The legal basis is our legitimate interests under Art. 6(1)(f) GDPR in improving valuation accuracy. You have the right to object to this processing at any time by contacting us. We describe this data as pseudonymised rather than anonymous: while we hold no means to link it back to your account, we do not claim it has been irreversibly anonymised.

Estimated valuations (eBay)

yeih retrieves current market pricing from active eBay listings for similar items via the eBay Browse API. This is a read-only query using item names and categories. No personal data is sent to eBay.

Because eBay receives no personal data and processes nothing on our behalf, it is not one of our sub-processors. eBay acts as an independent controller and receives only non-personal product queries.

A2A broadcasting data

When you tag an item as For sale, your AI agent may broadcast it to the yeih buyer agent network. The following data is shared within the network:

  • Item name, condition, quantity, asking price
  • Locality (city or region, not your address)

Your full name, email address, and home address are never shared with buyer agents unless you explicitly confirm a connection.

Analytics (PostHog)

Pseudonymised usage data including pages visited, session duration and device type, processed on PostHog's EU infrastructure, not linked to your name or email. You can opt out in Settings.

Payment data (Paddle)

Payments are processed by Paddle, which acts as merchant of record and seller of record for all subscriptions. yeih does not store payment card details. From Paddle we receive only: confirmation of payment, subscription plan and billing period, and billing email address.

Usage and security records

Sign-in events; item creation, deletion, and retagging; valuation requests; price confirmations; feedback submissions; introduction confirmations; and records of technical failures affecting your data. See section 04 for how these records are used and how long they are kept.

03

Why we collect it (legal bases)

Contract — Art. 6(1)(b)

Account, inventory, and payment data are necessary to provide the yeih service.

Legitimate interests — Art. 6(1)(f)

Usage analytics help us improve the product. We also keep limited technical records of messages we have already checked: sender, subject, date, classification result and sender-verification details, so that the same message is not processed twice and so we can identify spoofed senders. You may opt out of analytics at any time.

To resolve delivery disputes and demonstrate that required notices were sent, we keep the rendered subject and body of transactional emails for 90 days after sending. This log contains the exact content the recipient received, including account or item details. Access is restricted to the company administrator, currently the sole director of kikoship UG. After 90 days the rendered body is purged, leaving only the send record (recipient, template, status, and timestamp).

Consent — Art. 6(1)(a)

Reading your mailbox and creating inventory items from it are separate permissions, each recorded when you give it. You can withdraw either at any time in Settings, or by disconnecting your mailbox.

04

Activity and security logging

We keep a short record of actions you take in yeih. This covers when you sign in, when you add, delete, or retag items, when you request a valuation, when you confirm a price, when you send feedback, when you confirm an introduction, and when a technical operation fails.

For deletions we record which item was deleted, so that we can answer your questions about missing data and restore items where possible. For all other actions we record how many items were affected, not which ones.

We do not log what you view, what you search for, or how you move around the app.

Legal basis

Our legitimate interests under Art. 6(1)(f) GDPR: operating a reliable service, diagnosing faults, answering your questions about your own account, and investigating suspected unauthorised access. We have assessed that this processing is limited to what is necessary for those purposes, that it records actions rather than the content of your data, and that it does not build a behavioural profile of you.

Retention

Activity records are deleted 45 days after the action they describe. They are also deleted immediately and permanently when you close your account.

Your rights

You can request a copy of your activity records at any time. You can object to this processing under Art. 21 GDPR by writing to us at hello@yeih.ai.

We record sign-in events, deletions, and technical failures for security and data-integrity reasons, and we cannot switch these off while your account is open: without them we could not investigate unauthorised access or tell you what happened to data you have lost. You can ask us to stop recording the remaining categories, which are retagging, valuation requests, price confirmations, feedback submissions, and introduction confirmations, and we will do so.

05

Who we share your data with

We do not sell your data. Sub-processors are contractually bound to process data only on our instruction.

We use the following service providers to operate yeih. Each processes personal data on our instructions under a data processing agreement.

Supabase
Legal entity
Supabase Pte. Ltd. (Singapore)
Purpose
Database, authentication, file storage
Data processed
All account and inventory data, including item details, photos, and valuations
Location
Hosted in the EU (Frankfurt, AWS eu-central-1)
Anthropic
Legal entity
Anthropic Ireland Limited (Ireland)
Purpose
AI analysis of email receipt content, item descriptions and uploaded photos to identify receipts and extract structured item data
Data processed
Email receipt content, item descriptions, and uploaded photos
Location
Processing on United States infrastructure
Nylas
Legal entity
Nylas, Inc. (United States)
Purpose
Email account connection and message retrieval
Data processed
Email content and metadata from mailboxes you connect
Location
EU data residency region (api.eu.nylas.com)
Lovable
Legal entity
Lovable Labs Incorporated (United States)
Purpose
Application platform, transactional email delivery, and the in-app assistant
Data processed
Account data, email addresses, message content
Location
United States
PostHog
Legal entity
PostHog, Inc. (United States)
Purpose
Product analytics
Data processed
Usage events, device and browser information, IP address
Location
PostHog EU Cloud
n8n
Legal entity
n8n GmbH (Germany)
Purpose
Workflow automation for email processing
Data processed
Email content and item data in transit
Location
Paddle
Legal entity
Paddle.com Market Ltd (United Kingdom)
Purpose
Merchant of record for subscription billing
Data processed
Name, email address, billing country, and payment details, which are held by Paddle and not by us
Location
United Kingdom

Google has two separate roles. When you sign in with Google, Google acts as an independent controller for that sign-in: we send it nothing, and it returns your name, email address and profile photo. Google is also the model provider behind the in-app assistant, where it acts as a sub-processor engaged by Lovable rather than a provider we contract with directly.

Lovable engages its own sub-processors to provide the platform, transactional email delivery and the in-app assistant.

Some of our providers engage their own sub-processors. Nylas publishes its list at nylas.com/security/subprocessors, and Lovable engages sub-processors including Google for the in-app assistant. Each is bound by onward-transfer obligations under the agreements described above.

06

International transfers

Some of our providers are established outside the European Economic Area, or store or access personal data outside it. Where that happens, we rely on the following safeguards:

  • Our contracting entity is Anthropic Ireland Limited. Content is processed on Anthropic's United States infrastructure, for which we request US-region inference, and that transfer is covered by the EU Standard Contractual Clauses. Under Anthropic's commercial terms, API inputs and outputs are not used to train their models.
  • Lovable Labs Incorporated is established in the United States. This transfer is covered by the EU Standard Contractual Clauses.
  • PostHog, Inc. is established in the United States. Our data is held in PostHog's EU Cloud; where access from the United States occurs, it is covered by the EU Standard Contractual Clauses.
  • Supabase Pte. Ltd. is a company established in Singapore. All account, inventory and file data is hosted in the European Union (Frankfurt, AWS eu-central-1). Where access from outside the EEA occurs, it is covered by the EU Standard Contractual Clauses.
  • Nylas, Inc. is established in the United States and processes connected mailbox data in its European data residency region. Nylas relies on the EU-U.S. Data Privacy Framework, where applicable, and on the European Commission's Standard Contractual Clauses, as set out in its Data Processing Addendum. We have verified its Data Privacy Framework certification as active on the U.S. Department of Commerce Data Privacy Framework List.
  • Paddle.com Market Ltd is established in the United Kingdom, which the European Commission has recognised as providing an adequate level of protection.

You can ask us for details of the safeguards applying to any specific provider by writing to hello@yeih.ai.

07

Your GDPR rights

  • Access: request a copy of all data we hold about you
  • Rectification: correct inaccurate data
  • Erasure: request deletion of your account. This removes your items, attachments, photos, leads, mailbox connections and profile. Two exceptions: invoice records required under German tax law (HGB, AO) are kept in pseudonymised form with no link back to you, and your email address may remain on our bounce-suppression list so we do not email you again after a delivery failure.
  • Portability: receive your inventory data as JSON or CSV
  • Object: opt out of analytics processing
  • Withdraw consent: turn off mailbox reading or item creation at any time in Settings, or disconnect your mailbox entirely

Contact hello@yeih.ai. We will respond within 30 days. You may also lodge a complaint with the Berliner Beauftragte für Datenschutz und Informationsfreiheit (BlnBDI) at datenschutz-berlin.de.

Record of deletion

When an account is deleted we keep one record of the deletion itself, retained indefinitely. It exists so we can demonstrate that an erasure request was carried out, and it contains no identifying content: the internal account identifier, who initiated the deletion (you or an administrator), the timestamp, and the number of rows removed per data category. No email address, name, or inventory content is kept in it.

08

Changes to this policy

We will notify you by email at least 14 days before any material changes to this policy take effect.

Contact

For privacy questions or to exercise your rights: hello@yeih.ai