Expressions
Most of the time a step’s setting is a fixed value you type in. But workflows get powerful when a setting can change based on the data flowing through a run: an email that greets each customer by name, a condition that checks a score, a URL built from a contact’s ID. Expressions are how you do that.
There are two kinds, and they work well together.
String templates
A string template builds a piece of text with values dropped into it, using
{{ }} markers. Reach for a template whenever you are composing text such as an
email body, a message, or a URL:
See String Templates.
Expressions that compute values
When you need to calculate or compare, rather than assemble text, you write an expression. Expressions handle arithmetic, comparisons, yes/no logic, and picking between options:
See Expressions.