Real-Time Notifications in CRM: Why SSE Beats Polling

When a new lead comes in, every minute of delay costs conversion probability. Traditional CRMs rely on polling, checking the server every 30-60 seconds for updates. That means a lead could sit unnoticed for up to a minute. Server-Sent Events (SSE) push notifications to the browser the instant something happens, cutting response time to near-zero.

How SSE works for CRM notifications

SSE establishes a persistent, one-way connection from the server to the browser. When a lead is created, a document is uploaded, or a deal stage changes, the server pushes an event through the open connection. The browser receives it instantly and displays a notification. No polling, no delays, no wasted server requests checking for updates that aren't there.

Real-world impact on broker workflows

Brokers using real-time SSE notifications report contacting new leads within 2 minutes of submission, compared to 15-30 minutes with email-only notifications (which compete with hundreds of other emails). Instant awareness means instant action, and in mortgage broking, the first call wins the deal more often than not.

Battery and bandwidth efficiency

Unlike WebSocket connections that maintain two-way communication, SSE uses a single lightweight HTTP connection. It's battery-friendly on mobile devices and bandwidth-efficient, important for brokers who keep their CRM open all day. If the connection drops, SSE reconnects automatically, ensuring notifications resume without user intervention.