What this skill does
Build cold email campaigns and generate hyper-personalized email sequences with MachFive. Build a campaign end-to-end, preview output, then generate sequences from lead data.
MachFive Cold Email is part of the Developer Tools category — developer tools that help your agent write, review, debug, and ship code. You can install it on its own or alongside other developer tools skills from the OpenClaw catalog.
How to install MachFive Cold Email
The easiest path is via the OpenClaw Easy desktop app — one click, no terminal required:
- Download OpenClaw Easy for macOS or Windows (free, one-click installer, ~30 seconds).
- Open the in-app Skills panel.
- Search for
cold-emailand click Install. - The skill activates automatically when an incoming message matches its description.
Install from the command line
If you already run the OpenClaw CLI, add MachFive Cold Email with a single command:
openclaw skills add cold-email
This pulls cold-email from ClawHub and installs it into ~/.openclaw/skills/cold-email/. Restart the OpenClaw gateway afterwards so the new skill is discovered.
How to use MachFive Cold Email
Once installed, MachFive Cold Email activates on its own: when an incoming message on WhatsApp, Telegram, Slack, Discord, Feishu or Line matches the skill's description, your OpenClaw agent loads it and runs the workflow. You can also trigger it explicitly by describing the task in chat. No extra configuration is required after install.
Manual install (advanced)
If you prefer manual installation:
- Click the Download .zip button above to grab
cold-email-1.1.0.zipdirectly from our S3 mirror. - Unzip into
~/.openclaw/skills/cold-email/(create the directory if it does not exist). - Restart OpenClaw Easy (or the OpenClaw CLI gateway) so the new skill is discovered.
Frequently asked questions
How do I install MachFive Cold Email?
Install MachFive Cold Email in the OpenClaw Easy desktop app by opening the Skills panel, searching for cold-email, and clicking Install. From a terminal you can run: openclaw skills add cold-email. Either way the skill is placed in ~/.openclaw/skills/cold-email/.
Is MachFive Cold Email free?
Yes. MachFive Cold Email is free and open-source, distributed under the Apache-2.0 license through ClawHub. No account or payment is required to download or run it.
What does MachFive Cold Email do?
Build cold email campaigns and generate hyper-personalized email sequences with MachFive. Build a campaign end-to-end, preview output, then generate sequences from lead data.
Related: more developer tools skills
If MachFive Cold Email looks useful, you may also want to check out other developer tools skills in the OpenClaw catalog:
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Free, open-source · Apache-2.0 · Works with Claude, ChatGPT, Gemini, or local Ollama models