Cookie Policy
Last updated: 31 July 2026
This Cookie Policy explains every cookie Voltessa actually sets — what it does, who sets it, and how long it lasts — and how to change your choice at any time. It should be read together with our Privacy Policy.
"Strictly Necessary" cookies don't require your consent and can't be switched off, because Voltessa can't function without them. Everything else is off by default and only set if you consent to it.
Manage your preferences
You can change your cookie choices at any time — this opens the same preferences panel shown on your first visit.
Strictly Necessary
Required for sign-in, security, and core functionality.
| Cookie | Set by | Purpose | Duration |
|---|---|---|---|
| authjs.session-token / __Secure-authjs.session-token | Voltessa | Keeps you signed in. Identifies your authenticated session. | 30 days |
| authjs.csrf-token | Voltessa | Security cookie that protects the sign-in process from cross-site request forgery. | Session |
| authjs.state / authjs.pkce.code_verifier / authjs.callback-url | Voltessa | Temporary cookies used only during Google sign-in to securely complete the OAuth handshake. | A few minutes (deleted after sign-in completes) |
| voltessa-trader-org | Voltessa | For Energy Trader accounts with more than one assigned client, remembers which client organization you're currently viewing. | 1 year |
| voltessa-consent | Voltessa | Stores your cookie preferences (this is the cookie that remembers your choices below). | 6 months, or until you change your preferences |
| voltessa-locale | Voltessa | Remembers your chosen language (English/Bulgarian) for compliance pages and the cookie banner. | 1 year |
Functional
Enables optional features, such as our Calendly scheduling widget.
| Cookie | Set by | Purpose | Duration |
|---|---|---|---|
| Calendly session/analytics cookies (e.g. __cf_bm, _cfuvid, and Calendly's own) | Calendly | Set only if you click "Request Demo" and consent to Functional cookies — powers the embedded scheduling widget. | Set by Calendly — see Calendly's own cookie policy |
Analytics & Performance
Would help us understand how Voltessa is used, so we can improve it. Not currently in use — no analytics cookies are set today.
No cookies in this category are set today.
Marketing
Would support advertising measurement. Not currently in use — no marketing cookies are set today.
No cookies in this category are set today.