Letterhawk Terms of Service

Effective November 9, 2026

These terms are between you and Hall House Labs LLC (“we”), a North Carolina limited liability company. Letterhawk is the Chrome extension for Gmail and the service at letterhawk.hallhouselabs.com that it connects to.

The service

Letterhawk records metadata and pixel fetches for outbound messages you choose to track, and shows follow-ups, category statistics, and outcomes you enter. A pixel fetch is not proof that a person read the message.

Your responsibility

You choose which messages to track, and you are responsible for doing so lawfully. A tracked message contains a 1×1 image, and when the recipient's mail app loads it, Letterhawk records an open as described in our Privacy Policy. You will give any notice and get any consent your recipients' laws require. For example, EU and UK ePrivacy rules generally require consent before a tracking pixel is used. You will also follow your employer's policies. If someone asks you not to track them, add them to your do-not-track list, and Letterhawk will not add a pixel to messages addressed to them. You will not use Letterhawk to track children, to harass anyone, or to try to access another customer's account.

Accounts

You sign in with Google. If you already have a Letterhawk account with the same verified email, signing in links to it, unless it is already linked to a different Google account. Keep your API keys private; you are responsible for activity under them. You can export and delete your account in the extension.

Plans

Plan limits and prices are the ones shown in the extension and at checkout when you subscribe. We may change them before billing starts and, after that, with notice before your next renewal. The free plan includes 30 tracked emails per calendar month and shows the last 30 days of history. Older mail stays stored until you delete the account. New accounts start with a 14-day trial of paid features. Pro's price is shown on the checkout buttons in the extension and on the Stripe checkout page. Pro removes the monthly tracking limit, shows your full history, and adds the assistant connection. The follow-up list, category stats, and outcomes are included on every plan.

When billing is on, you can cancel in the Stripe Customer Portal without deleting your account. Cancellation stops future charges. Deleting your Letterhawk account cancels its Stripe subscription immediately, without a refund for the unused part of the period. If that cancellation fails, the account is not deleted until it succeeds.

Acceptable use

You will not probe, scan, or overload the service, share API keys, or use the assistant key to write outcomes the account holder did not ask for. We may suspend an account that threatens the service or other customers, including by exhausting the shared database budget.

Your responsibility to others

You will defend and indemnify Hall House Labs LLC against claims by your recipients or others that arise from how you use Letterhawk, including tracking without required notice or consent.

Disclaimers

Letterhawk is provided "as is" and "as available." Open and reply data is approximate: some mail apps block images, and some security tools and privacy features load them automatically, so an open can be missed or counted when no one read the message. We disclaim implied warranties to the extent the law allows. To the extent the law allows, we are not liable for indirect, incidental, special, consequential, or punitive damages, or for lost profits or data, and our total liability for any claim relating to the service is limited to the greater of the amount you paid us for Letterhawk in the 12 months before the claim or US $50.

Ending access

You can stop using Letterhawk and delete your account at any time. We may suspend or end an account that breaks these terms or threatens the service or other customers. Deleting an account cancels its Stripe subscription immediately, without a refund for the unused part of the period, and then removes its data as described in the Privacy Policy. Stripe keeps its own billing records as the law requires.

Changes to these terms

We may update these terms by posting a new version here with a new effective date. For a material change, we will tell you in the extension or by email before it takes effect. If you do not agree, stop using Letterhawk and delete your account.

Governing law

These terms are governed by the laws of the State of North Carolina, without regard to its conflict-of-law rules. Disputes will be resolved in the state or federal courts located in Wake County, North Carolina, except where the law does not allow that.

Contact

Hall House Labs LLC
Registered Agents Inc, 4030 Wake Forest Rd Ste 349, Raleigh, NC 27609
german@hallhouselabs.com