Apple Mail
This MCP server bridges AI agents with Apple Mail on macOS, enabling email operations like reading, sending, drafting, searching, and scheduling through natural language, with added features like stable draft IDs and confirmation-gated sending.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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yu2001-s
Source: Glama
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Install from
The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
Nodemailer: Message-level raw option bypasses disableFileAccess/disableUrlAccess, enabling arbitrary file read and full-response SSRF in the delivered message
APPLE_MAIL_MAX_SEARCH_MAILBOXenvironment variable (default 5000; set to 0APPLE_MAIL_MCP_IMAP_IDLENo 0 Set 1 to enable IMAP IDLE push notifications (new-mail alerts) for every configured accountAPPLE_MAIL_MCP_IMAP_IDLE_MSNo 30000 Idle timeout (ms) before a pooled IMAP connection is closed (0 = never close)APPLE_MAIL_MCP_MAX_BUFFERwith the environment variable (in bytes) if youAPPLE_MAIL_MCP_TEMPLATES_FILEEmail templates are persisted to disk so they survive server restarts, stored as JSON at (default ~/Library/Application Support/apple-mail-mcp/templates.json).ETHEREAL_APIETHEREAL_API_KEYETHEREAL_CACHEETHEREAL_WEBTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
64/64 tools missing one or more hints — search-messages (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get-message (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); read-message (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +61 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool test coverage
Only 4/64 tools referenced in tests (6%)
Write tests that reference each tool by name so every tool has at least one test.
Shell command execution
3 child_process calls — runs shell commands
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
No arbitrary install scripts
Has postinstall/preinstall script — runs arbitrary code on npm install
Remove postinstall/preinstall hooks unless they’re essential.
Production dependencies are patched
0 critical, 1 high severity in production deps — nodemailer@9.0.0 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
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