About Actions, Host Actions, and Hosts

The basic building block of command execution within the product takes place within an action.  From actions, sends (PUT) and receives (GET) are executed. 

Actions are either mailbox-based, host-based, or not tied to any mailbox or host. Mailbox-based actions are the most common and are referred to as actions (or Action). Host-based actions are referred to as host actions. Both mailbox- and host-based actions are organized within the hierarchical structure of a host (see Tree Structure).

Actions not tied to any mailbox or host are referred to as standalone actions.

In this documentation, the term action, when used by itself, is considered a general reference to actions, host actions, or standalone actions, unless noted otherwise.