This paper investigates a corpus of email messages known as “419 scams”: a form of financial fraud in which huge offers of money are being made to people provided they pass on bank details and other personal information to the perpetrators. This kind of message presents us with a typical instance of “globalized” communication: they are produced in the margins of the world (the term “419 scam” is Nigerian) and sent to other places; they are electronically mediated; and they are written in varieties of “world languages”, mostly English. In the messages, authors claim particular identities and relationships, and have to do so using specific, generically regimented forms of communication. Investigating such forms yields a complex view of what it takes to communicate in a globalized environment: at least three different forms of communicative competence seem to be blended. First, authors require technological competence, the capacity to control, explore and exploit the communicative opportunities offered by global email systems. Second, they require cultural competence: they need some awareness of genres and genre expectations among their addressees in order to stand a chance of success. And thirdly, they need linguistic competence: the capacity to actually produce linguistic messages that are congruent with the projected identities and relationships in the transaction. We see that whereas the first two forms of competence appear to be well developed, the third is often problematic, yielding rich indexical signals pointing towards fraud. The genre of email fraud thus yields insights into the changing nature of communication in the age of globalization.