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SNS

AWS SNS is a fully managed pub/sub messaging service for decoupling microservices, distributed systems, and serverless applications. · AWS · Messaging

Overview

AWS SNS provides scalable, managed pub/sub messaging for event-driven architectures, supporting multiple protocols and easy integration with AWS services.

Good fit

Use SNS to quickly set up scalable pub/sub messaging or notifications between AWS services and external endpoints.

  • event notifications
  • microservice decoupling
  • real-time alerts

Not a fit

Avoid SNS if you need guaranteed message ordering, long message retention, or advanced filtering beyond basic attributes.

  • strict FIFO required
  • large message payloads
  • complex filtering
Quickstart · 5 steps
  1. Sign in to AWS Management Console and navigate to SNS.
  2. Create a new topic and choose a topic type.
  3. Add one or more subscriptions (e.g., email, HTTP endpoint).
  4. Publish a test message to the topic.
  5. Verify message delivery to your subscribed endpoints.

Other free messaging options

Brevo · Messaging
300 emails/day · Store up to 100,000 contacts · 2,000 unique contacts can enter active automations
Billing risk: None
No card
MailerLite · Messaging
250 subscribers · 2,500 emails/month · 2 user seats
Billing risk: None
No card
Mailjet · Messaging
200 emails/day · 6,000 emails/month · Basic analytics
Billing risk: None
No card
Postmark · Messaging
100 emails/month · No overages allowed
Billing risk: None
No card