Privacy Policy

Last updated: 2026-09-02

Thank you for using Inkhound (the "Service"), a native macOS app for designing Apple Mail HTML signatures. This Privacy Policy explains what data Inkhound processes, what it deliberately does not collect, and your rights. The short version: Inkhound has no accounts, your signature content never leaves your Mac, and the only data sent anywhere is anonymous, aggregate product analytics that you can switch off in Settings.

Data Controller and Contact

The Service is operated by Vitalii Rizo. For the purposes of data protection laws (such as the EU GDPR), Vitalii Rizo is the "Data Controller" of any personal data processed in connection with Inkhound. You can contact the Data Controller at:

• Name: Vitalii Rizo
• Address: Adlergestell 371, 12527 Berlin, Germany
• Email: vitalii.rizo@gmail.com

What Inkhound Does Not Collect

• No account. There is no sign-up, no password, and no user profile.
• No signature content, ever. The HTML you design, the text you write, and any images you reference stay on your Mac and inside Apple Mail's own storage. Inkhound has no server that signature content is sent to.
• No names, no full e-mail addresses. Inkhound never collects the display names or full e-mail addresses configured in Mail — only the domain part, as described below, and only for analytics.
• No Mail content beyond what's needed to write a signature. Inkhound does not read your messages, contacts, or calendars.

How Inkhound Writes Your Signature

When you save a signature, Inkhound writes it directly into Apple Mail's own signature storage on your Mac — the iCloud Drive Mail folder and/or ~/Library/Mail — using access you grant via the standard macOS folder picker, then quits and relaunches Apple Mail so the signature takes effect. This is a local file operation. No signature data is transmitted to us or to any third party as part of this process.

Images used inside a signature are referenced by https:// link rather than embedded, so when Mail sends a message, the image is fetched by the recipient's mail client directly from wherever you hosted it — not from us.

Analytics

Inkhound uses PostHog (EU Cloud, hosted in Frankfurt, Germany) for basic, anonymous product analytics, identified only by a random device identifier that is not tied to your name, Apple ID, or e-mail address. It can be switched off entirely in Settings → Privacy.

What's collected, when analytics is on:

• App version and macOS version.
• Interface language (English, German, or Russian).
• Country, derived by PostHog from the connection's IP address at the time of the event — the IP address itself is discarded and not stored.
• That the app was opened (an event, with no further detail).
• That a signature was saved — as an event, with counts and flags such as whether the signature was newly created — but never the signature's content.
• License status: whether a Business license has been purchased.
• The domain part only of the e-mail addresses configured in Apple Mail (for example example.com from you@example.com) — never the full address, never the local part before the @. This is used to distinguish personal from business use in aggregate, and to decide when to show the in-app "Business use" reminder.

Never collected, under any circumstances, via analytics: signature contents, names, or full e-mail addresses.

Analytics data is retained in PostHog for up to one year, after which it expires automatically.

This Website

The website you're reading now (signature.vrizo.net) sets no cookies, uses no analytics, loads no trackers, and pulls in no external fonts or scripts. If you use the dark/light toggle in the header, your choice is remembered only in your browser's local storage on this device — nothing is sent to us.

Third-Party Processors

Where processing happens outside the EU, recognised safeguards apply (Standard Contractual Clauses or an equivalent framework).

• Apple (Apple Inc.): Inkhound is distributed through the Mac App Store, and Business license purchases are billed and processed entirely by Apple. We never see your payment details; Apple processes purchases under its own privacy policy.
• PostHog (PostHog, Inc., EU Cloud): Anonymous, content-free product analytics as described above, processed in the EU (Frankfurt), retained up to one year.
• Cloudflare, Inc.: This website is hosted on Cloudflare Pages. Cloudflare may keep standard server access logs (e.g. request timestamps and status codes) for security and operational purposes; the site itself sets no cookies.

Legal Bases for Processing (GDPR)

• Legitimate interests (Art. 6(1)(f) GDPR): anonymous, aggregate analytics (app opens, save events, license status, account domains, error-free operation) help us understand usage and improve Inkhound without identifying you.
• Consent (Art. 6(1)(a) GDPR): analytics is on by default but can be switched off at any time in Settings → Privacy; doing so stops further collection going forward.

Data Retention

• Signature content: never transmitted to us — stays on your Mac.
• Analytics events (app version, OS version, language, country, save/open events, license status, account domains): retained in PostHog for up to one year, then deleted automatically.
• Website theme preference: stored only in your browser's local storage, until you clear it or choose the other theme.

Your Rights

Under GDPR you have rights of access, rectification, erasure, restriction, objection, and portability. Because Inkhound keeps no account and analytics is keyed to an anonymous device identifier rather than your identity, there is usually nothing server-side we can tie to a specific person — but if you have any request or question, contact vitalii.rizo@gmail.com and we will respond within 30 days. You also have the right to lodge a complaint with a supervisory authority (for example, the Berlin Commissioner for Data Protection).

Children's Privacy

Inkhound is not directed at children under 16. We do not knowingly process personal data of anyone under 16; since we keep no accounts and no content linked to any person, exposure is minimal by design.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Updates are posted on this page with a new "last updated" date. Significant changes will be announced in the app.

Contact Us

Questions about this policy or your data: vitalii.rizo@gmail.com.