What is the __hsmem cookie?
__hsmem is an HTTP cookie associated with the HubSpot platform (CRM, marketing automation, forms, live chat). It appears on a website when that site embeds a HubSpot widget, form, or script, such as a contact form, live chat, or HubSpot tracking code.
It is set by HubSpot's code loaded on the page, typically when a visitor first interacts with a HubSpot component, not necessarily just from loading the site.
What data it stores
The cookie stores internal technical information used by HubSpot to support the correct operation of its components, such as session state for a widget or form. The value is a string generated by HubSpot's system, with no publicly documented format.
The data is sent to HubSpot domains, depending on the configuration of the account the site is integrated with.
What it is used for
The cookie's purpose is to enable the technical functioning of HubSpot tools embedded on the site, for example, making sure forms or chat widgets work correctly during a visitor session.
For the site owner, this cookie doesn't serve analytics or marketing purposes; it supports the basic functionality of the HubSpot components in use.
Does it require consent?
In CookieFix's classification, __hsmem falls under the strictly necessary category, since it supports the core technical operation of the HubSpot component rather than marketing tracking.
- Strictly necessary cookies don't require prior consent under the ePrivacy Directive and its national transpositions.
- Site owners should still list it in their cookie policy, with a clear purpose and provider.
- It's worth periodically checking the classification, as HubSpot may change how its cookies are used.
How to block or delete __hsmem
A visitor can delete or block this cookie from their browser settings (Chrome, Firefox, Edge, Safari) under the site data and cookie management section. Blocking it may affect the functioning of embedded HubSpot forms or widgets.
For site owners, a consent management platform like CookieFix can automatically block HubSpot scripts until consent is given, where required for other HubSpot cookies that fall outside the strictly necessary category.
Frequently asked questions
It's a technical cookie set by HubSpot, used to support the internal functioning of HubSpot forms or widgets embedded on a website.
No, since it's classified as strictly necessary, it doesn't require prior consent, but it should be listed in the site's cookie policy.
Its typical duration is 1 year, though this can vary depending on the HubSpot configuration.
You can delete site cookies from your browser settings; keep in mind that doing so may affect the functioning of HubSpot components on that page.