Create a draft email in Mail.app. Opens a compose window for user review before sending. Requires Mail.app to be running.
AI agents use mail.create_draft to create or update resources in Orchard — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Orchard environment.
This tool creates email drafts, which are reversible (can be discarded or edited before sending). It does not execute the send operation automatically, so it cannot cause irreversible side effects like transmitting unwanted messages. However, it receives user data (email content) as input and creates persistent state in Mail.app, warranting a Write classification.
From the tool's definition Tool description states 'Create a draft email in Mail.app' and 'Opens a compose window for user review before sending.' The verb 'create' and the explicit mention of draft composition without automatic sending indicates reversible data creation.
Documented attack patterns abuse exactly the kind of access mail.create_draft gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Orchard, and nothing reaches the server without passing your rules. This is the rule we recommend for mail.create_draft:
{
"version": "1",
"default": "deny",
"tools": {
"mail.create_draft": {
"limits": [
{
"counter": "mail.create_draft_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}mail.create_draft stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Create a draft email in Mail.app. Opens a compose window for user review before sending. Requires Mail.app to be running. It is categorised as a Write tool in the Orchard MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Orchard MCP server in PolicyLayer and add a rule for mail.create_draft: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Orchard. Nothing to install.
mail.create_draft is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the mail.create_draft rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for mail.create_draft. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
mail.create_draft is provided by the Orchard MCP server (l22-io/orchard-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Orchard, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
65 Orchard tools catalogued and risk-classified — across an index of 43,000+ MCP servers.