Apple-Mail-MCP-Server/CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[1.4.0] - 2026-04-03

Fixed

• reply-to-message empty body from background processes — Replies (and forwards) sent via the MCP server had empty body text because reply msg with opening window creates a GUI compose window that doesn't fully initialize from non-interactive processes. Switched to without opening window, which makes set content work immediately and reliably. In-Reply-To and References headers are still set correctly by Mail.app. (#7)
• forward-message empty body from background processes — Same root cause and fix as reply-to-message. forward msg with opening window → without opening window.
• Removed no-op quoted content concatenation — The old & content of theReply / & content of theForward appended to the body was always empty (the quoted content lives in Mail.app's HTML layer, not the plaintext content property). Removed the dead concatenation.

[1.3.0] - 2026-04-01

Changed

• Search all mailboxes by default - search-messages and list-messages now search across all mailboxes in an account when no mailbox is specified, instead of defaulting to INBOX. This dramatically improves results for Gmail accounts where messages live in labels rather than INBOX. Deduplication ensures each message appears only once.
• Multi-account listing - list-messages now iterates all accounts when no account is specified, matching the existing behavior of search-messages.

Fixed

• Date filter validation - dateFrom and dateTo now reject non-parseable date strings (e.g., "31", "abc") with a clear error message instead of crashing AppleScript. The existing regex security filter is preserved; a semantic .refine() check is added on top.

[1.2.1] - 2026-03-27

Security

• Message ID validation - Message IDs are now validated as numeric-only (/^\d+$/) to prevent injection attacks
• Batch size cap - Batch operations are limited to a maximum of 100 messages per request
• Date filter validation - Date filters are validated to allow only alphanumeric characters and safe punctuation; an additional belt-and-suspenders escapeForAppleScript() call is applied before interpolation
• Attachment save path traversal prevention - save-attachment uses path.resolve and restricts save paths to the user's home directory, /tmp, /private/tmp, and /Volumes; attachment names containing /, \, null bytes, or .. are rejected
• Defense-in-depth ID coercion - All AppleScript message ID interpolations now use Number(id) as an extra safeguard
• Attachment count limit - send-email and create-draft enforce a maximum of 20 file attachments

Added

• Security test suite - src/security.test.ts with unit tests for all input validation schemas and path traversal prevention
• Integration test suite - test/integration.test.ts for live Mail.app testing
• New npm scripts - test:integration and test:all for running integration and combined test suites

[1.2.0] - 2026-03-14

Added

• send-serial-email - Mail merge tool: send personalized emails to multiple recipients with {{placeholder}} token support (max 100 recipients per batch) (PR #3 by @michaelhenze)
• File attachments - send-email and create-draft now accept an optional attachments parameter (array of absolute file paths) (PR #2 by @michaelhenze)

Fixed

• Locale-independent date parsing - Dates now display correctly on non-English macOS systems (e.g., German). Previously, locale-dependent date strings could cause all emails to show the current date instead of actual received date (PR #4 by @michaelhenze)
• Send/draft timeout resilience - Increased timeout from 30s to 60s and enabled automatic retry with exponential backoff for send-email and create-draft, preventing failures when Mail.app is slow to establish SMTP connections

Improved

• Attachment paths are validated (must be absolute, must exist) before sending — provides clear error messages instead of cryptic AppleScript failures
• send-serial-email uses spawnSync("sleep") instead of CPU-burning busy-wait between sends
• send-serial-email enforces safety limits: max 100 recipients, max 10s delay between sends

[1.1.1] - 2026-03-10

Fixed

• TTL cache for account and mailbox name resolution to reduce redundant AppleScript calls

[1.1.0] - 2026-03-09

Added

• Batch operations - batch-mark-as-unread, batch-flag-messages, batch-unflag-messages
• Mailbox management - create-mailbox, delete-mailbox, rename-mailbox
• Mail rules - list-rules, enable-rule, disable-rule
• Contacts - search-contacts (Contacts.app integration)
• Email templates - save-template, list-template, get-template, delete-template, use-template
• save-attachment - Download attachments to disk
• HTML content - preferHtml option in get-message
• Date received in search/list output
• Sender filter and pagination (from, offset) for list-messages
• Date range filtering (dateFrom, dateTo) for search-messages
• Cross-account search when no account specified
• Exposed unflag-message tool (was implemented but not wired up)

Fixed

• Use Mail.app's configured default send account instead of hardcoded fallback (PR #1 by @Leewonchan14)
• Add message ID to search and list results (PR #1 by @Leewonchan14)

[1.0.0] - 2026-01-06

First stable release with full Apple Mail integration.

Features

Message Operations

• search-messages - Search messages by query, sender, subject with filtering options
• list-messages - List messages in any mailbox with pagination
• get-message - Retrieve full message content (subject, body, metadata)
• send-email - Send emails with To, CC, BCC recipients from any account
• create-draft - Save emails to Drafts folder without sending
• reply-to-message - Reply to messages with reply-all support, send or save as draft
• forward-message - Forward messages to new recipients with optional body
• mark-as-read / mark-as-unread - Toggle message read status
• flag-message / unflag-message - Toggle message flagged status
• delete-message - Move messages to Trash
• move-message - Organize messages into mailboxes

Mailbox Operations

• list-mailboxes - List all mailboxes/folders with unread counts
• get-unread-count - Get unread count for specific mailbox or all accounts

Account Operations

• list-accounts - List all configured Mail accounts

Diagnostics

• health-check - Verify Mail.app connectivity and permissions
• get-mail-stats - Get message and unread counts per account

Technical

• Full AppleScript integration with proper escaping and error handling
• Retry logic with exponential backoff for transient failures
• User-friendly error messages with actionable suggestions
• Debug logging support (set DEBUG=1 or VERBOSE=1)
• 60-second timeout for message search operations
• Message ID lookup across all mailboxes for reliable operations

[0.1.0] - 2026-01-06

Initial release - project skeleton.

Added

• Initial project structure forked from apple-notes-mcp
• MCP server skeleton with tool definitions
• TypeScript types for Mail data models
• AppleScript utilities with error handling