Cookie Policy
Last updated: July 10, 2026
This policy explains what Thiskle stores in your browser and why. It supplements our Privacy Policy. “Cookies” here also covers similar technologies such as localStorage.
What cookies are
Cookies are small files a website stores in your browser. localStorageis a related mechanism for saving small settings on your device. Both let a site remember things between visits — like the fact that you're signed in, or that you prefer dark mode.
Do we need your consent?
Under the EU/UK ePrivacy rules, consent is required for cookies that are not strictly necessary— typically advertising and analytics trackers. We don't use any of those. Everything below is either strictly necessary to run the service you asked for, or a functional preference you set yourself. On that basis a cookie-consent banner is not required, and we've chosen not to add one rather than ask you to accept cookies that don't exist.
Cookies we use
These are set by the app's own sign-in system (Auth.js). On secure (HTTPS) production they carry a __Secure- or __Host- prefix. They are all strictly necessary.
| Cookie | Purpose | Duration |
|---|---|---|
authjs.session-token | Keeps you signed in — the core session. Without it you'd have to log in on every page. | Up to 90 days (rolling) |
authjs.csrf-token | Protects sign-in and forms against cross-site request forgery. | Session |
authjs.callback-url | Remembers which page to return you to after you sign in. | Session |
Local storage we use
These aren't cookies, but they save small settings on your device:
| Key | Purpose | Category | Duration |
|---|---|---|---|
thiskle-theme | Remembers your light / dark / system appearance choice so the app doesn't flash the wrong theme. | Functional | Until you clear it |
thiskle-outlook-token | Stores the connection code that links the Outlook add-in to your account, so you don't re-enter it. Only present if you use the add-in; also kept in Outlook's own settings. | Functional / necessary for the add-in | Until you disconnect the add-in |
Third-party cookies
Thisklesets no third-party advertising or analytics cookies. If you install the optional Outlook add-in, it runs inside Microsoft Outlook and loads Microsoft's Office library; any storage Microsoft uses in that context is governed by Microsoft's own policies. Our error-monitoring provider does not set cookies in your browser.
Managing cookies
You can view and delete cookies and local storage through your browser's settings, and set your browser to block cookies. Note that if you block the strictly-necessary cookies above, you won't be able to sign in — they're what keeps you logged in. Clearing thiskle-themesimply resets your appearance to “system”.
Changes
If we ever introduce a cookie that requires consent, we'll update this page and ask for your consent first. Questions? privacy@thiskle.com.