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lexmail Privacy Policy

Effective date: 2026-09-03 · Version 1.0 (EN, 2026-09-11). Together with the End-User License Agreement, this policy forms the entire agreement between you and the licensor.

1. Our product principle: local-first

lexmail is local-first software. Your original mail, archive database, attachments, indexes and preferences are stored only on your device by default. AI features (summaries, translation, thread analysis, classification fallback) connect by default only to model endpoints you configure yourself (for example a local LM Studio); analysis requests do not pass through us.

2. What the licensing channel collects (data minimization)

To validate a paid license, the software communicates with our licensing service. The transmitted data is limited to:

  • Device fingerprint: a salted SHA-256 hash of a local hardware identifier (the raw identifier never leaves your machine and cannot be reversed into personal data);
  • Device name: your computer's hostname (shown in the self-service license portal; it may contain a personalized name you set yourself);
  • License key, order number, and software version;
  • Payment details are processed by the payment provider (Lemon Squeezy as merchant of record for card/PayPal; WeChat Pay for CNY) under their respective privacy policies.

We do not collect your mail contents, account credentials, address books, or behavioral profiles. Website and licensing-service access logs (origin IP, timestamps) are retained for 14 days for security and troubleshooting only, then deleted automatically.

2.5 Account data (optional registration)

The website offers an optional account (email + password) used solely to: view your license keys after sign-in (recovery), claim purchases, and receive verification/order/password-reset emails. Passwords are stored as scrypt hashes (never in plaintext); your email is never used for marketing. Purchasing and using the software works fully without an account. To delete your account, contact us via the address published on this site — account data (email, sessions, key ownership) will be erased, while order and license records are retained as required for reconciliation. The international portal supports Google Sign-In: we receive only your email address and Google user ID (sub) — never your password or other Google data.

3. Purpose and retention

Device hashes and order data are used solely for license validation, device-count enforcement, renewal handling and duplicate-issuance prevention. They are kept for a reasonable period after the license relationship ends (reconciliation and legal obligations), then deleted or anonymized. You can unbind a device in-app at any time, or contact us to erase your licensing records.

4. Processors

  • Lemon Squeezy (international merchant of record): checkout, subscription billing, refunds and tax remittance — payment data stays with the payment platform;
  • WeChat Pay (CNY channel): payment and refund processing;
  • Hosting/network providers: transport and storage for the licensing endpoint only.

5. Your rights (GDPR/CCPA)

For licensing-related personal data we hold, you may request access, correction, deletion, and withdrawal of consent (including data-subject access requests). Contact us via the address published on this site; identity-verified requests are handled within 15 business days.

6. Children's privacy

The software is not offered to children under 14, and we do not knowingly collect children's personal data.

7. Changes to this policy

Updates are published on this page with a version tag; material changes are announced in-app. Continued use constitutes acceptance of the updated policy.

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