API
- Customers
 - How to retrieve data from the Campaign Statistics API?
 - Webhooks
 - Data types
 - Products
 - Single use tokens
 - API authentication
 - Shops
 - Importing data into Custobar
 - Data retrieval
 - How to create and manage API keys?
 - Events
 - Adding, updating and removing customer's mailing lists
 - Sales
 - Data import formats
 - How to install Custobar.js tracking script with Google Tag Manager?
 - Set up the latest version of Custobar.js site tracking