הלכה על גיטין 1:1

After the get is written and signed, the first agent appears before a beit din to appoint a person designated by the get administrator in the locale of the wife to serve as his substitute agent. In the context of this appointment, the first agent will perform the required signature confirmation by stating, “This get was written and signed in my presence” (Gittin 1:1). The beit din signs a document corroborating the appointment of the second agent to deliver the get to the wife. The get is then mailed to the second agent, and he delivers the get to the wife in the presence of another beit din. In this manner, an intercity get between almost any two places in the world can be completed from start to finish within a week, something unimaginable in previous generations but often very necessary given contemporary circumstances.