Cookies & privacy
Sennight uses the smallest amount of data needed to make a group pick a date — and nothing else. No analytics, no advertising, no third-party trackers.
🍪 The cookies we set
All of these are strictly necessary first-party cookies — the app simply can't work without them. They expire on their own after 8 hours and never leave this site.
- Event session — set once you enter an event's password, so you don't have to retype it on every page of that event.
- Organiser session — set for the creator of an event, so the manage dashboard knows it's you.
- Edit-link session — set when you open a personal edit link from your email, so you can change your own availability.
We also send a short, one-time security token (CSRF) with forms to stop other sites submitting on your behalf — it isn't stored as a cookie.
📋 The information you give us
When you respond to an event we store the name you type and your availability. An email address is optional — if you add one, it's used only to send the edit/login links you ask for, and to let the organiser reach you about the event. We don't email you anything else. Deleting an event removes its responses.
⚖️ Why there's no cookie pop-up
Under the EU ePrivacy rules and UK PECR, consent banners are only required for non-essential cookies (tracking, analytics, ads). Sennight sets only strictly necessary cookies for a service you actively requested, so no consent is needed — this page is here for transparency. If you use a privacy browser that auto-clears cookies, you may be asked for an event's password again each visit; allowing cookies for this site keeps you signed in.