Activity
This feature only records activities of a site’s registered users, and the retention duration of activity data will depend on the site’s plan and activity type.

Data Used: To deliver this functionality and record activities around site management, the following information is captured: user email address, user role, user login, user display name, WordPress.com and local user IDs, the activity to be recorded, the WordPress.com-connected site ID of the site on which the activity takes place, the site’s Jetpack version, and the timestamp of the activity. Some activities may also include the actor’s IP address (login attempts, for example) and user agent.

Activity Tracked: Login attempts/actions, post and page update and publish actions, comment/pingback submission and management actions, plugin and theme management actions, widget updates, user management actions, and the modification of other various site settings and options. Retention duration of activity data depends on the site’s plan and activity type. See the complete list of currently-recorded activities (along with retention information).

Data Synced (?): Successful and failed login attempts, which will include the actor’s IP address and user agent.

Carousel
Image views are only recorded if the site owner, has explicitly enabled image view stats tracking for this feature via the jetpack_enable_carousel_stats filter.

Data Used: If image view tracking is enabled, the following information is used: IP address, WordPress.com user ID (if logged in), WordPress.com username (if logged in), user agent, visiting URL, referring URL, timestamp of event, browser language, country code.

Activity Tracked: Image views.

Comment Likes
This feature is only accessible to users logged in to WordPress.com.

Data Used: In order to process a comment like, the following information is used: WordPress.com user ID/username (you must be logged in to use this feature), the local site-specific user ID (if the user is signed in to the site on which the like occurred), and a true/false data point that tells us if the user liked a specific comment. If you perform a like action from one of our mobile apps, some additional information is used to track the activity: IP address, user agent, timestamp of event, blog ID, browser language, country code, and device info.

Activity Tracked: Comment likes.

Google Analytics
This feature is only available to sites on the Premium and Professional plans.

Data Used: Please refer to the appropriate Google Analytics documentation for the specific type of data it collects. For sites running WooCommerce (also owned by Automattic) and this feature simultaneously and having all purchase tracking explicitly enabled, purchase events will send Google Analytics the following information: order number, product id and name, product category, total cost, and quantity of items purchased. Google Analytics does offer IP anonymization, which can be enabled by the site owner.

Activity Tracked: This feature sends page view events (and potentially video play events) over to Google Analytics for consumption. For sites running WooCommerce-powered stores, some additional events are also sent to Google Analytics: shopping cart additions and removals, product listing views and clicks, product detail views, and purchases. Tracking for each specific WooCommerce event needs to be enabled by the site owner.

Likes
This feature is only accessible to users logged in to WordPress.com.

Data Used: In order to process a post like action, the following information is used: IP address, WordPress.com user ID, WordPress.com username, WordPress.com-connected site ID (on which the post was liked), post ID (of the post that was liked), user agent, timestamp of event, browser language, country code.

Activity Tracked: Post likes.

Notifications
This feature is only accessible to registered users of the site who are logged in to WordPress.com.

Data Used: IP address, WordPress.com user ID, WordPress.com username, WordPress.com-connected site ID and URL, Jetpack version, user agent, visiting URL, referring URL, timestamp of event, browser language, country code. Some visitor-related information or activity may be sent to the site owner via this feature. This may include: email address, WordPress.com username, site URL, email address, comment content, follow actions, etc.

Activity Tracked: Sending notifications (i.e. when we send a notification to a particular user), opening notifications (i.e. when a user opens a notification that they receive), performing an action from within the notification panel (e.g. liking a comment or marking a comment as spam), and clicking on any link from within the notification panel/interface.

Search
This feature is only available to sites on the Professional plan.

Data Used: Any of the visitor-chosen search filters and query data in order to process a search request on the WordPress.com servers.

Sharing
Data Used: When sharing content via email (this option is only available if Akismet is active on the site), the following information is used: sharing party’s name and email address (if the user is logged in, this information will be pulled directly from their account), IP address (for spam checking), user agent (for spam checking), and email body/content. This content will be sent to Akismet (also owned by Automattic) so that a spam check can be performed. Additionally, if reCAPTCHA (by Google) is enabled by the site owner, the sharing party’s IP address will be shared with that service. You can find Google’s privacy policy here.

Subscriptions
Data Used: To initiate and process subscriptions, the following information is used: subscriber’s email address and the ID of the post or comment (depending on the specific subscription being processed). In the event of a new subscription being initiated, we also collect some basic server data, including all of the subscribing user’s HTTP request headers, the IP address from which the subscribing user is viewing the page, and the URI which was given in order to access the page (REQUEST_URI and DOCUMENT_URI). This server data used for the exclusive purpose of monitoring and preventing abuse and spam.

Activity Tracked: Functionality cookies are set for a duration of 347 days to remember a visitor’s blog and post subscription choices if, in fact, they have an active subscription.