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Postbroad
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Listmonk scheduler. Schedule newsletters to your Listmonk lists.

Send the newsletter and the social posts about it from one plan. Postbroad creates the campaign on your own Listmonk server and shows it as accepted with a link.

Start for $0Listmonk limits
LMListmonkAvailable now
What you connectYour own Listmonk server, with an API keyYour account or key
How live is confirmedAccepted, with a link from the network

What you can post to Listmonk.

The rules Postbroad checks before a Listmonk post is scheduled. Facts marked as not yet confirmed are still being checked against Listmonk's own pages.

TextNo limit on the body. The subject can be up to 5,000 bytes.Confirmed on the network
PostsOne email campaign to a list, in rich text, HTML, Markdown or plain textConfirmed on the network
MediaImages go to your Listmonk media library and sit inlineConfirmed on the network
As Postbroad applies them on 4 Nov 2026. Listmonk can change its rules; so does this table. Accepted, with a link from the network.

Before you connect

  • The address of your Listmonk server
  • An API user and its token, from Admin, Users

Let your agent post to Listmonk.

Your AI agent can draft and schedule Listmonk posts through Postbroad, with a preview first. Its drafts wait for you unless you allow more.

Ask your agentExample
Draft a Listmonk version of this week's launch post
for Northwind. Show me the preview, and don't
schedule anything until I say yes.
ChatGPTHosted MCPClaudeHosted MCPClaude CodeHosted MCPCursorHosted MCPOpenAI CodexHosted MCPGemini CLIHosted MCPOpenClawHosted MCPn8nREST APIMakeREST APIZapierREST API

Listmonk questions.

What can I post to Listmonk?

Text: No limit on the body. The subject can be up to 5,000 bytes. Posts: One email campaign to a list, in rich text, HTML, Markdown or plain text. Media: Images go to your Listmonk media library and sit inline.

Does Listmonk need to approve my app?

No review is needed. You connect your own Listmonk server, with an API key.

How do I know a Listmonk post went live?

Listmonk accepts the post and Postbroad shows it as accepted, with the link Listmonk gives. It isn't called checked, because Postbroad doesn't read it back.

Can an AI agent post to Listmonk for me?

Yes, through the Postbroad MCP server or the API. Its drafts wait for you unless you switch on autonomy for the brand.

Every channel

Schedule your first Listmonk post.

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