Interpost

Interpost is a term used to describe the insertion or bridging of a message within an existing sequence of posts or entries. It derives from inter- meaning between and post meaning a message or entry. Because it is a loosely defined term, interpost can refer to several distinct practices and systems across different fields.

In online forums and social media, interpost commonly refers to inserting a new message between previously posted replies to provide context, continuity, or a pivot to a related topic. It can also describe cross-posting content to multiple platforms with a bridging note that links the posts, helping readers follow a single topic across feeds. Ethical and policy considerations include avoiding derailment, ensuring clear attribution, and respecting thread structure.

In logistics and postal services, the phrase interpost is used in some organizations to denote inter-post coordination or exchanges between office locations to move mail efficiently. In archival or publishing contexts, an interpost may refer to an inserted annotation or editorial note placed between entries in a log, chronicle, or document collection.

Because usage varies, there is no universal standard for interpost. The term is primarily descriptive rather than normative, and its interpretation depends on the domain and organization involved. Related concepts include cross-posting, threading, and bridging.