This chapter undertakes a corpus linguistic exploration of the royal correspondence material, following the scribal/holograph division of the previous chapter. Using keyword analysis and lexical bundles, the analysis identifies features that firstly, differentiate royal correspondence from its non-royal counterpart; and secondly, differentiate scribal and holograph royal letters. The evidence correlates with the material analysis in Chapter 2, with formulaicity and consistency key elements of scribal letters which may have indexed a more overt and institutionalised royal power. Holograph letters, on the other hand, show a more variable and idiosyncratic make-up, providing a more personal frame to the epistolary interaction with a letter's recipient.