Now that we know how to write a formal letter, we really need to know how to send the same letter to lots of different people.

Most common document production applications, eg MS Word, have a feature called Mail Merge

This feature allows us to connect a document to a data file.

Once the connection is made, we can then link data fields from the data file to places in our document.

For example, instead of writing a single recipient's name on the letter, we would place a data field on the letter instead. Do you remember how to put an automatic page number into a document? That is a kind of data field.