"National Rail" matching MCP servers:

Provides Japanese business day calculations: add or subtract business days, count between dates, check whether a date is a business day, and reverse-calculate deadlines. Handles national holidays and year-end periods fully offline with no API keys required.

Provides Japanese national holidays, wareki (era) conversion, and date information. Works fully offline with no API keys required.

MCP server for corporate Exchange that provides access to email, calendar, and people directory via OWA JSON API.

Enables LLM agents to autonomously manage email via IMAP/SMTP, including reading, searching, drafting, sending, triaging, calendar event extraction, and secure attachment handling with zero-trust antivirus scanning.

Enables full read/write control over Apple Mail.app and Calendar.app on macOS, exposing all configured accounts without per-provider setup.

A local MCP server that connects Codex to Microsoft Graph and Gmail for reading and managing personal mail and calendar accounts.

A self-hosted MCP server for managing email, calendar, and cloud storage across Microsoft 365, Google Workspace, and IMAP accounts, enabling natural language interaction through any MCP client.

Local MCP server for reading/sending email via Gmail and managing Google Calendar events, enabling an AI agent to handle email and calendar operations through natural language.

Enables AI agents to access multiple Gmail/Google Workspace accounts for searching and reading mail, calendars, and attachments.

Enables an AI assistant to read, search, send, reply to, forward, and organize cPanel mailbox messages over IMAP and SMTP, including folders, attachments, drafts, and flags, plus calendar event management via CalDAV when configured. Runs as a local stdio server so each user connects with their own credentials.

MCP Server for use with msgraph calls to mail, calendar, and files

Enables agents to query a locally resolved relationship mesh that joins mail, calendar, iMessage, and contacts into one per-person record, providing shared history, open items, recency, drift, and warmest-channel context without sending data off disk.