IMAP IDLE tends to be unstable and unreliable in real-world deployments, especially for long-running background services. It also introduces significant operati

IMAP IDLE tends to be unstable and unreliable in real-world deployments, especially for long-running background services. It also introduces significant operational and implementation complexity, which makes it harder to maintain and reason about. For a system like Bichon, a simpler diff-based approach is usually easier to operate and more predictable.