By using conditions in the MailerLite action after submit, you can let the form execute the MailerLite action only when the specified conditions are satisfied.
Use Cases
You can set the MailerLite action to execute when the customer age input value set in your respective age number field is more than or equal to 18.
Furthermore, you can specify the condition(s) in an expression. You can select multiple expressions (one condition per line) where they are and-connected, which means the action will be executed when all the conditions are true/satisfied.
You can learn how to write conditions expressions here, or you can also try our Conditions generator tool to write the expressions easily.