This Cookie Policy explains how Sendersy (Spiridonov Dmitry Vadimovich (Individual Entrepreneur registered in the Russian Federation)) uses cookies and similar technologies on sendersy.com and app.sendersy.com. It supplements the Privacy Policy.
1. What is a cookie
A cookie is a small text file stored on your device by your browser when you visit a website. We also use related technologies such as localStorage and sessionStorage; we refer to all of them collectively as «cookies».
2. Cookie categories
We group cookies into four categories. Strictly necessary cookies are required for the site to work and cannot be switched off. The other categories can be turned on or off via the cookie banner shown on first visit and at any time later via the consent settings link in the footer.
2.1 Strictly necessary (always on)
| Cookie | Purpose | Lifetime |
|---|---|---|
authjs.session-token / __Secure-authjs.session-token | Authenticated session (Auth.js) | 30 days |
authjs.csrf-token | CSRF protection for login and form submissions | session |
authjs.callback-url | Where to return after OAuth login | session |
sendersy.consent | Stores your cookie consent choices | 12 months |
NEXT_LOCALE | Preferred language (ru/en) | 12 months |
All session cookies are marked HttpOnly, Secure, and SameSite=Lax. Without these cookies the Dashboard cannot function.
2.2 Functional
Remember UI preferences (theme, sidebar state, last-opened tab). We do not currently set such cookies — this category is reserved for future use.
2.3 Analytics
Used to measure aggregate usage of the website (page views, conversion funnels) and the effectiveness of our advertising campaigns. These cookies are set by Yandex.Metrika, which loads on all pages of the site. You can opt out at the provider level via Yandex's settings or by blocking requests to mc.yandex.ru.
| Cookie | Provider | Purpose | Lifetime |
|---|---|---|---|
_ym_uid | Yandex.Metrika | Anonymous visitor identifier | 12 months |
_ym_d | Yandex.Metrika | First-visit date | 12 months |
_ym_isad | Yandex.Metrika | Adblock detection | 1 day |
_ym_visorc | Yandex.Metrika | Session-replay (Webvisor) state | session |
Yandex.Metrika is operated by Yandex LLC (Russia). See Yandex's privacy policy for details on what they collect and how to opt out at the provider level.
2.4 Marketing / advertising
We do not set marketing or behavioural-advertising cookies and have no current plans to. No third-party advertising or social-tracking scripts are loaded on our pages.
3. Third-party cookies
Sendersy domains do not load Google Analytics, Yandex.Metrica, Facebook Pixel, Hotjar, or similar third-party scripts. Embedded payment forms (Stripe, ЮKassa) may set their own cookies on their respective domains — see their privacy policies for details.
4. Managing cookies
You can manage cookies in three ways:
- Through the cookie banner displayed on first visit.
- Through the «Cookie settings» link in the footer at any time.
- Directly in your browser settings — most browsers allow you to delete cookies or block them per site. Note that disabling strictly necessary cookies will prevent sign-in.
5. Do Not Track
We honour the browser-level «Do Not Track» (DNT) and «Global Privacy Control» (GPC) signals: when set, the cookie banner pre-rejects all non-essential categories.
6. Updates
The list of cookies above is updated whenever we add or remove a cookie. Material changes are highlighted in the cookie banner so you can review and re-consent.
7. Contact
Questions about this policy: support@sendersy.com.
Effective from 2026-05-18.