workflowstacks
marketing

Simplify Email Marketing with openemm

Automate newsletters and campaigns with openemm, ideal for startup founders, with 164 GitHub stars.
intermediate⏱ 30 minutes💵 Free
169 stars47 forksJavaScriptGuide quality 8/10 · reviewed Jun 30Updated 10/13/2026100% free · open source
What it is

Use openemm to make email marketing automations.

Real use case example

"A solo developer wants to automate the onboarding process for new customers. They use openemm to create an automation that triggers a welcome email within 10 minutes of a customer signing up. They also use it to add the customer to a Notion database for tracking purposes. This saves them time and ensures a smoother customer experience."

Best insideSelf-hostedAny AI Client
When to use it
  • •When you need to send regular newsletters to your subscribers
  • •When you want to automate email marketing campaigns with multiple stages
  • •When you need to send transactional emails, such as order confirmations or password reset links
Ready-to-paste prompt
Create a new mailing list and send a newsletter to all subscribers using the OpenEMM web interface: `http://localhost:8080/openemm`
Heads up: Make sure to update the `java.home` property in the `openemm.properties` file to point to a compatible Java Runtime Environment (JRE) version, as OpenEMM requires a specific version of Java to run
Saves to your device
Use with Claude
New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

✅ Light setup

Installs with a command or two; your AI agent can do it for you.

Try it instantly — no install
Claude Code
mkdir -p ~/.claude/skills/openemm && curl -fsSL https://workflowstacks.com/api/skills/openemm/claude-skill -o ~/.claude/skills/openemm/SKILL.md
Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)
claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

What's inside — free to inspect

No purchase needed

Read the entire source before you build — unlike paid marketplaces that hide it behind a buy button.

2
top-level files
4
folders
998.5M
source size
AGPL-3.0
license
Key files
README.md
File tree
.github/
backend/
frontend/
runtime/
LICENSE
README.md
Quick Actions
Details
Creator
agnitas-org
Language
JavaScript
Category
marketing
Published
8/8/2019

Are you the creator of this tool? and earn 85% of every sale.

Show it off in your README:

Featured on WorkflowStacks
[![Featured on WorkflowStacks](https://workflowstacks.com/api/badge/openemm.svg)](https://workflowstacks.com/skills/openemm?utm_source=github&utm_medium=badge)
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Do this with a working workflow

Pages we wrote and tested that put a skill like this to work — importable n8n templates, outcome guides and Claude Desktop configs.

Outcome guide

Turn meeting notes into a summary email automatically

Paste the transcript into a private form and the workflow writes and emails a concise recap — decisions, owners, open questions — that people will actually read.

MCP config

GitHub MCP config

Search repos, read code, open issues and PRs from Claude.

Free n8n template

Abandoned Cart Win-Back

Draft a personalized, non-pushy win-back email for every abandoned cart — referencing the exact product left behind. You approve before sending.

Ready-to-run pack · one-time $29

Rank Tracker

A weekly email of where you actually rank on Google.

Includes the tested workflow and a written setup playbook. Needs: SerpAPI key (free tier).

See what you get

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