Opt-in is a term related to data privacy. It means a permission given to marketers or data to use the information about the user or perform other marketing activities.

Opt-in is a legal marketing approach when a marketer asks for users’ permission in order to send them promotional content. Opt-in can be full or partial, which means the user can agree to all or just some marketing activities.

Under GDPR , companies are required to ask for consent for sending any advertising messages unless they are processing personal data on the basis of legitimate interest.

Here’s an example of an opt-in placed on the Piwik PRO website – an additional checkbox in a download form:

More about opt-in on Piwik PRO blog:


  • EU hosting vs. EU sovereignty: Why the difference matters for privacy-first analytics

    As EU-US data transfer tensions continue to evolve, driven by legal uncertainties and heightened regulatory scrutiny, organizations are under increasing pressure to make informed decisions about where and how their analytics data is stored. The collapse of previous data transfer frameworks and the uncertain future of the current EU-U.S. Data Privacy Framework have made one…

  • Why Shopify stores need privacy-compliant analytics

    Shopify store owners depend on analytics to track sales, understand customer behavior, and measure marketing performance. However, as privacy regulations like GDPR, CCPA, and the ePrivacy Directive evolve — and as consumers become more aware of how their data is used — traditional analytics platforms pose increasing risks. Tools that rely on third-party cookies and…