Post to Listmonk from Gemini CLI

Gemini CLI drafts it. You approve it. PostDelegate posts it.Listmonk: Email campaigns through your own Listmonk.

How to post to Listmonk from Gemini CLI

Add PostDelegate to Gemini CLI. Add the server to ~/.gemini/settings.json as below. Sign in with PostDelegate when Gemini CLI prompts you.
~/.gemini/settings.json
```
{
  "mcpServers": {
    "postdelegate": {
      "url": "https://app.postdelegate.com/mcp-oauth-dynamic"
    }
  }
}
```
Connect Listmonk in PostDelegate. You need a running Listmonk reachable from the internet over http:// or https://, and a Listmonk username and password that can read settings and lists and create campaigns.
Ask Gemini CLI for a draft. Describe the post in plain words. Gemini CLI checks your Listmonk channel's rules, creates the post and sends back a preview link.

Teach Gemini CLI the posting rules

Save PostDelegate’s AGENTS.md in your repository and point to it from your GEMINI.md, so Gemini CLI follows the posting rules there. Agent files has the steps.

What to ask Gemini CLI

Mention any Listmonk setting in plain words and Gemini CLI fills it in. Gemini CLI can also read text files in your project, such as a changelog or a draft in Markdown.

Draft a Listmonk campaign for the newsletter list, subject “November update”, with a preview line.
Schedule the campaign for Tuesday at 7:00 with the Default template.
Write this month’s newsletter from CHANGELOG.md and docs/roadmap.md, as a draft campaign.

What Gemini CLI can do on your Listmonk channel

Check the rules first. Before writing, it reads your Listmonk channel's length limit and required settings.
Draft, schedule or post. It creates a draft, a scheduled post or an immediate post, and runs the same checks as the app.
Use your media. It attaches files from your media library or adds one from a public link.
Review and fix. It lists what is scheduled, changes the Listmonk settings of a post that has not gone out, and deletes posts you no longer want.

Listmonk is newsletter software you host yourself. Connecting it lets PostDelegate create a campaign in your Listmonk and start it on a schedule, so a newsletter can sit on the same calendar as the social posts that announce it.

Listmonk settings Gemini CLI can fill in

Setting	Notes
Subject	Required. The email subject.
Preview	The preview text shown next to the subject in many inboxes.
List	Required. Choose from the lists in your Listmonk.
Template	Optional. Choose a Listmonk template, or Default.

Before you start

Publishing starts the campaign. When the post goes out, PostDelegate creates a regular campaign on your chosen list and sets it to running, which sends it.
Use a PostDelegate draft to hold a campaign back, and send a test through Listmonk itself first.

The Listmonk channel guide has every field, and MCP tools lists exactly what an assistant can and cannot do.

Questions

Will Gemini CLI publish to Listmonk without asking me?

Not unless you ask it to. Ask for a draft and the post waits on your calendar until you schedule it, and your workspace's approvals apply as usual. Tools that change data are marked as such, so Gemini CLI can ask you before it schedules or deletes anything.

Do I need an API key to connect Gemini CLI?

No. Gemini CLI signs in with your PostDelegate account through your browser. An API key is only for clients that cannot sign in, as described in MCP clients.

Does it cost extra to use Gemini CLI with PostDelegate?

No. The MCP server is on every plan, and Gemini CLI runs on your own Gemini CLI account, so PostDelegate never charges for AI. Every plan starts with a 7-day free trial with no card.

Can Gemini CLI attach images or video to a Listmonk post?

It can use files already in your media library, or add one from a public link. It cannot fetch files from your computer, so upload those in the app first. See MCP tools.

Does PostDelegate send the email itself?

No. PostDelegate creates a regular campaign in your own Listmonk and sets it to running, and your Listmonk sends it. Use a draft in PostDelegate to hold a campaign back, and send a test through Listmonk first.

Can I attach files to a Listmonk campaign?

No. Attachments are not sent. Put pictures inside the HTML content where they should appear, using images from the media library.

Listmonk from other assistants

Other networks from Gemini CLI

Prefer to plan Listmonk posts yourself? See the Listmonk scheduler.