Interact with Apple Mail app - read unread emails, search emails, and send emails
AI agents use mail to create or update resources in Apple MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Apple MCP Server environment.
While the tool includes read operations (read unread emails, search emails) which would normally be 'Read' category, the inclusion of 'send emails' elevates it to 'Write'. Sending emails creates new data and has external effects (messages transmitted to recipients), but these actions are technically reversible (emails can be recalled in some cases, deleted, or recipients informed of errors).
From the tool's definition Tool description explicitly states it can 'send emails' in addition to read and search capabilities. The ability to send emails constitutes creating and transmitting messages, which are reversible write operations.
Documented attack patterns abuse exactly the kind of access mail gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Apple MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for mail:
{
"version": "1",
"default": "deny",
"tools": {
"mail": {
"limits": [
{
"counter": "mail_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}mail 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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Interact with Apple Mail app - read unread emails, search emails, and send emails. It is categorised as a Write tool in the Apple MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Apple MCP Server MCP server in PolicyLayer and add a rule for mail: 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 Apple MCP Server. Nothing to install.
mail 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 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. 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 is provided by the Apple MCP Server MCP server (supermemoryai/apple-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 Apple MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
7 Apple MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.