An API (Application Programming Interface) is an interface that enables data exchange between different software applications. In marketing, this is useful for synchronizing contact data or automating marketing campaigns. For example, an email API lets you integrate an email marketing platform with another application or email service provider.
Brevo uses API keys that serve as unique identifiers. Users can easily create and delete API keys in their Brevo account to control access to specific functions and data. Only authorized applications can access the API, which is important for data security.