Dead-lettering

Concept

Dead-lettering is a messaging safety net that parks events or messages that cannot be delivered in a separate store, so they can be inspected and replayed later instead of being dropped.

Title graphic: Dead-lettering (Concept)

Type	Concept

Key points about Dead-lettering

Retries and dead-lettering keep events from disappearing when delivery fails. · Azure Event Grid - Simply Explained
Filtering, retries and dead-lettering are built in. · Event Grid - Simply Explained

Episodes about Dead-lettering

Azure Service Bus - Simply Explained

2026-07-15 · Video on YouTube

Azure Service Bus is Microsoft's enterprise messaging service for building reliable, secure, and loosely coupled applications. In this episode, we explain what Azure Service Bus is, how it works, and why it's a key component of modern cloud architectures.…

Build Reliable Power Automate Flows for Production

2025-12-12 · Video on YouTube

Ever had a Power Automate flow wake you at 3:07 a.m. with 6,000 ghost runs and no clear owner? This video is your blueprint for taming the orchestrator before it tames you. You’ll learn how to design resilient Power Automate architectures with clean triggers…

Azure Event Grid - Simply Explained

2026-10-25 · Video on YouTube

Learn Azure Event Grid in plain English. Discover event-driven architecture, push vs pull delivery, retries, and how it compares to Event Hubs and Service Bus. Azure Event Grid is the part of Azure that tells your apps what already happened. A file lands in…

Event Grid - Simply Explained

2026-07-15 · Video on YouTube

Azure Event Grid is the backbone of event-driven applications in Microsoft Azure, enabling services to react instantly when something happens. In this episode, we explain what Azure Event Grid is, how it works, and why it's a key building block for modern…

Timeline of episodes about Dead-lettering

Articles about Dead-lettering (3)

Azure Event Grid vs Service Bus vs Event Hubs: Which Messaging Service Do You Actually Need?
2026-10-26 · Mirko Peters
Confused by Azure messaging services? Compare Azure Event Grid, Event Hubs, and Service Bus to choose the right architecture for your cloud apps.
Mastering Azure Event Hubs: Partitions, Consumer Groups, and Scaling
2026-08-27 · Mirko Peters
Welcome back to our ongoing exploration of cloud architecture and real-time data engineering. In the world of modern enterprise applications, the volume of data gen…
Queues vs. Topics: Choosing the Right Messaging Pattern in Azure Service Bus
2026-08-27 · Mirko Peters
Welcome back to the podcast companion blog! In our latest episode, we took a deep dive into the foundational elements of cloud messaging. If you haven't had a chanc…

Frequently asked questions

What is dead-lettering in Event Grid?

Dead-lettering works together with retries to keep events from disappearing when delivery fails. If an event cannot be delivered, it is set aside instead of being lost. The episode covers this under delivery failures, alongside the push or pull question. · From the episode: Azure Event Grid - Simply Explained

What features does Event Grid have for reliable delivery?

The episode names filtering, retries and dead-lettering built in, so notifications reach the right handlers. · From the episode: Event Grid - Simply Explained

Glossary

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Feed for this topic (RSS): entity/dead-lettering/feed.xml
M365.FM episodes on this topic: 4
Articles on this topic: 3

Maintained by Mirko Peters (Microsoft MVP) · Last updated: 2026-11-03