Send Listmonk Campaigns from Hermes Agent

Hermes Agent can create and schedule Listmonk email campaigns through Postiz. Once the Postiz skill is installed, you tell Hermes what the newsletter should say from Telegram, Discord, Slack, or the CLI. It writes the subject and preview text, picks the subscriber list and template on your self-hosted Listmonk, and schedules the send.

Setup Guide GitHub

Please make sure there is always a human in the loop.

Last updated: September 2026

Send a Listmonk Campaign in Seconds

Setup, then just ask

# One-time setup
npx skills add gitroomhq/postiz-agent
export POSTIZ_API_KEY=your_api_key

# Then just ask Hermes Agent:
> Send the monthly newsletter to the
  Customers list tomorrow at 9am

Hermes Agent: Done! Your Listmonk post is scheduled.

Listmonk-Specific Features

📧

Email Campaigns

Create and send email campaigns to your subscriber lists with rich HTML content, subject lines, and preview text.

📋

Mailing Lists

Target specific subscriber lists by ID. Send campaigns to the right audience segment every time.

🎨

Template Support

Use pre-built email templates by specifying a template ID. Maintain consistent branding across all campaigns.

👁

Preview Text

Set preview text that appears in email clients before the recipient opens the message. Boost open rates with compelling previews.

📰

Newsletter Automation

Automate recurring newsletters with scheduled sends. Let AI agents craft and deliver content on a regular cadence.

📅

Scheduled Delivery

Schedule email campaigns for optimal delivery times. Use ISO timestamps to send at exactly the right moment.

How to send Listmonk Campaigns from Hermes Agent

You describe what you want in plain language and Hermes Agent handles the Postiz calls for you. Here is how a typical conversation goes.

Find Your Listmonk Integration

Ask Hermes Agent whether your Listmonk account is connected. It also checks which options the platform supports.

Example conversation

> Is my Listmonk account connected to Postiz?

Hermes Agent: Yes — your Listmonk account is connected
  and ready. Want me to post something?

Compose Your Email

Write your email body in plain text or HTML. Tell Hermes Agent the subject line and preview text and it sets them.

Example conversation

> Draft a Listmonk post about our new
  feature launch

Hermes Agent: Here's a draft for Listmonk:
  "We just shipped something big..."
  Want me to add media and schedule it?

Schedule and Send

Schedule your email campaign for a specific time or send immediately. Target a specific list and optionally apply a template for consistent formatting.

Example conversation

> Yes — add screenshot.png and schedule
  it for tomorrow at 9am

Hermes Agent: Done! Scheduled on Listmonk for
  tomorrow at 9:00 AM.

Listmonk Settings Reference

Mention any of these in plain language and Hermes Agent sets them for you. These are the options every Listmonk campaign can carry.

Field	Type	Required	Description
`__type`	string	Yes	Must be "listmonk" to identify the platform
`subject`	string	Yes	Email subject line (min 1 character)
`preview`	string	Yes	Preview text shown in email clients before opening
`list`	string	Yes	List ID to send the campaign to
`template`	string	No	Template ID to use for the email layout

Common Configurations

Ask Hermes Agent for any of these common Listmonk campaign scenarios and it applies the matching settings.

Weekly Newsletter

Just ask

> Post it with: Weekly Newsletter

Hermes Agent: Got it. Applying:
  subject: Weekly Newsletter - March Edition
  preview: This week: new features, tips, and community highlights
  list: list-1
  template: newsletter-tmpl

Product Announcement

Just ask

> Post it with: Product Announcement

Hermes Agent: Got it. Applying:
  subject: Introducing Our New Feature
  preview: We've been working on something big...
  list: list-2

Promotional Campaign with Template

Just ask

> Post it with: Promotional Campaign with Template

Hermes Agent: Got it. Applying:
  subject: Flash Sale - 48 Hours Only
  preview: Up to 50% off everything in store
  list: list-3
  template: promo-template

Plain Text Update

Just ask

> Post it with: Plain Text Update

Hermes Agent: Got it. Applying:
  subject: A quick note from the team
  preview: Important updates about your account
  list: list-1

What is Hermes Agent?

Hermes Agent is an open-source AI agent from Nous Research, released under the MIT license. It runs on your own machine or server, you talk to it from Telegram, Discord, Slack, WhatsApp, Signal, or the CLI, and it executes tools such as the Postiz skill to post to Listmonk and other channels. It works with Nous Portal, OpenRouter, OpenAI, or your own model endpoint.

💬

Message From Anywhere

Talk to Hermes from Telegram, Discord, Slack, WhatsApp, Signal, email, or the terminal. Ask for a Listmonk post from whichever app you already have open.

⏰

Built-in Cron Scheduler

Create recurring jobs in plain language, such as weekdays at 9am. Hermes drafts and schedules Listmonk content through Postiz and reports back to your chat.

🔧

Open Source, Any Model

Hermes Agent is MIT licensed and self-hosted. Run it on Nous Portal, OpenRouter, OpenAI, or your own endpoint, and extend it with MCP servers or skills like Postiz.

How Postiz Works with Hermes Agent

Postiz ships as an agent skill in the agentskills.io SKILL.md format that Hermes Agent reads. The skill documents every Postiz CLI command, the credentials it needs, and the Listmonk settings, so Hermes knows how to list your channels, upload media, and create posts without any custom code.

✓Install the Postiz CLI (npm install -g postiz) and add the skill with npx skills add gitroomhq/postiz-agent
✓Hermes loads skills from ~/.hermes/skills and shows them with hermes skills list
✓Authenticate with POSTIZ_API_KEY, or run postiz auth:login for an OAuth device flow
✓Every Postiz command returns JSON, so Hermes can chain discovery, upload, and posting
✓Prefer MCP? Add https://mcp.postiz.com/mcp-oauth-dynamic under mcp_servers in ~/.hermes/config.yaml

Install Postiz

# Install the Postiz CLI and skill
npm install -g postiz
npx skills add gitroomhq/postiz-agent

# Authenticate: API key or OAuth device flow
export POSTIZ_API_KEY=your_api_key
# or: postiz auth:login

# Confirm Hermes can see the skill
hermes skills list

Listmonk Campaigns with Hermes Agent

Message Hermes Agent from any platform — it reads the Postiz skill, discovers your Listmonk integration, and handles the entire email campaign workflow autonomously.

🧠

From Any Chat App

Telegram, Discord, Slack, WhatsApp, Signal

Send a message to Hermes Agent from your favorite chat app. Its gateway runs in the background, so it picks up your message, discovers your Listmonk integration via Postiz, composes the email, and sends the campaign — all while you go about your day.

Hermes Agent

You: Post to Listmonk about our new
  feature launch, schedule for tomorrow
  at 9am

Hermes: I'll handle that! Let me:
  1. Find your Listmonk integration
  2. Compose your post content
  3. Schedule for tomorrow 9:00 AM

  Done! Post scheduled successfully.
  Post ID: abc-123

🧠

Scheduled & Proactive

Cron jobs for recurring newsletters

Hermes Agent has a built-in cron scheduler. Create a recurring job in plain language and Hermes drafts and schedules your Listmonk content through Postiz on that schedule, then reports back to whichever chat you use.

Hermes cron job

# From the terminal
hermes cron create "weekdays at 9am" \
  "Check ~/content/listmonk for new posts.
   Upload any media with postiz upload,
   then schedule each one to Listmonk
   for noon today via Postiz. Move posted
   files to ~/content/published."

# Or from any chat with Hermes
/cron add "weekdays at 9am" "Schedule
  today's Listmonk post via Postiz"

Why Hermes Agent + Postiz for Listmonk

Hermes Agent makes Postiz a natural fit for your Listmonk workflow. The agent discovers all available commands and autonomously chains them together.

✓Hermes Agent is MIT licensed and Postiz has a public API, so nothing is locked in
✓Chat-first: ask for a Listmonk post from Telegram, Discord, Slack, WhatsApp, or Signal
✓Cron jobs in plain language for hands-free recurring Listmonk posts
✓Cross-post to Listmonk and other channels in one request, each with its own settings
✓Model-agnostic: run Hermes on Nous Portal, OpenRouter, OpenAI, or your own endpoint
✓Credentials stay in Postiz; Hermes only holds a Postiz API key or OAuth session

SKILL.md (what Hermes reads)

---
name: postiz
description: Postiz is a tool to schedule
  social media and chat posts to 28+
  channels including Listmonk
homepage: https://docs.postiz.com/public-api/introduction
---

# Commands Hermes can run
postiz auth:status
postiz integrations:list
postiz integrations:settings <id>
postiz upload <file>
postiz posts:create -i <id> -c "..." -s <iso>
postiz posts:list
postiz analytics:platform <id>

# Listmonk settings
subject, preview, list, template

Using a different agent for Listmonk?

Postiz works with any AI agent that can run CLI commands or call MCP tools, and the Listmonk settings on this page are the same for every agent. Read the same guide for Claude Code, OpenClaw, Codex. Or see the guide for any AI agent and the Postiz MCP server.

Listmonk + Other Platforms

Send an email campaign and post to social media simultaneously. Each platform gets its own settings.

Example

> Post "Excited to announce our new feature!" to
  Listmonk and LinkedIn tomorrow at 9am, then schedule
  a daily tip on Listmonk every weekday at 10am

Hermes Agent: Done! Scheduled:
  - Listmonk + LinkedIn: tomorrow 9:00 AM
  - Daily tips on Listmonk: Mon-Fri 10:00 AM

What can you ask Hermes Agent to do on Listmonk?

You can ask Hermes Agent to create, schedule, cancel, and measure Listmonk posts in plain language. These are the kinds of requests it handles through Postiz.

Ask Hermes Agent

> Send the monthly newsletter to the Customers list tomorrow at 9am with the subject "September product update".

Hermes resolves the list ID, sets subject and preview, and schedules the campaign via Postiz.

Ask Hermes Agent

> Draft a launch announcement email for the Beta list using the Announcement template and show it to me before sending.

Hermes writes the email, sets list and template, and creates a Postiz draft for review.

Ask Hermes Agent

> Which Listmonk lists and templates are available?

Hermes fetches lists and templates through postiz integrations:trigger and summarizes them.

Listmonk rules Hermes Agent has to follow

Postiz validates every Listmonk post before it is scheduled, so these limits and required settings decide whether a request succeeds.

▸subject is required. preview is the text email clients show before the message is opened, so ask Hermes to write it deliberately.
▸list and template are IDs from your Listmonk instance. Hermes resolves them from the names you use.
▸The post content becomes the email body. Listmonk renders it inside the chosen template.
▸Listmonk is email, not social. Sends are hard to recall, so consider having Hermes create a draft first.

Hermes Agent and Listmonk: frequently asked questions

Can Hermes Agent send email campaigns through Listmonk?

Yes. With the Postiz skill installed, Hermes Agent creates and schedules Listmonk campaigns with a subject, preview text, body, subscriber list, and template on your self-hosted Listmonk server. You describe the newsletter in plain language from any chat Hermes is connected to and it runs the Postiz CLI commands.

How do I connect Listmonk to Hermes Agent?

Connect your Listmonk instance in the Postiz dashboard, then install the Postiz skill in Hermes with npx skills add gitroomhq/postiz-agent and set POSTIZ_API_KEY. Hermes finds the Listmonk channel with postiz integrations:list and fetches your lists and templates through Postiz. Listmonk credentials stay in Postiz.

How does Hermes Agent pick the Listmonk list and template?

Both settings take IDs from your Listmonk instance. Hermes fetches the available lists and templates through postiz integrations:trigger, matches the names you mention, and passes the IDs. If you have similarly named lists, Hermes should confirm the target before scheduling the send.

Can Hermes Agent create a draft newsletter instead of sending it?

Yes. Ask Hermes to save the campaign as a draft and it creates the Postiz post with the draft type instead of scheduling it. You review the subject, preview, and body in Postiz, then ask Hermes to move it to the queue when you are happy with it.

Can Hermes Agent send a Listmonk newsletter on a recurring schedule?

Yes. Hermes Agent has a built-in cron scheduler. Run hermes cron create "every friday 9am" with a prompt such as "compile this week's blog posts into a newsletter for the Subscribers list and schedule it via Postiz as a draft". Hermes runs it unattended and confirms in your chat.