A correlation-based query enables a relationship to be established between two different events, which take place during a given period of time.

Example:

• All those contacts that bought a yellow bag within 5 days from having opened the ‘New yellow bags in store!’ newsletter.
  or:
• All those contacts that placed an order more than 30 days after having clicked on the link in the newsletter.

See Creating a segment by correlating rules for more about correlation-based queries.

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