Help Center/ Simple Message Notification/ User Guide/ Topic Management/ Publishing a Message/ Introduction
Updated on 2024-10-12 GMT+08:00
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Introduction

SMN enables you to publish messages in the following formats:
  • Text
  • JSON
  • Template

After you publish a message to a topic, SMN will deliver the message to all confirmed subscription endpoints in the topic.

If an SMS message exceeds 490 characters, the message may be intercepted by operators. Messages sent to SMS endpoints cannot contain square brackets ([]).

You must ensure that firewall policies of the HTTP or HTTPS endpoints allow SMN to send messages over the Internet. An SMN HTTP or HTTPS message consists of a message header and body. For details, see HTTP or HTTPS Message Format.

Parent topic: Publishing a Message