The Delivery Manager Expression language is a powerful tool that can be used to manipulate data on the way in to DM using file import. This is of particular use when the contents of fields don't quite match. For example, one system might hold "first name, last name and title". It might be deemed necessary to concatenate them on their way into DM.

Along with familiar string manipulation, there are all the normal arithmetic operations, logic operators and a whole host of utility functions.

Please consult the expressions manual for reference and examples.