//! Delivery backends for routed email messages.
//!
//! After the router selects a destination for an incoming email, one of the
//! handlers here takes over: writing the message to the filesystem as an
//! `.eml` file, pushing it onto a Redis queue (feature-gated behind `redis`)
//! for downstream consumers, or refusing it outright via the reject handler.
pub use *;
pub use *;
pub use *;