Best Thunderbird MCP Servers
Thunderbird is a free and open-source email client, personal information manager, and calendar application developed by the Mozilla Foundation.
Why this server?
Provides integrated email reading and sending capabilities by accessing Thunderbird's local mail store and auto-discovering account configurations, allowing management of Thunderbird email accounts.
AlicenseAqualityDmaintenanceReads and searches Thunderbird mail from local mbox files and sends mail via SMTP using auto-discovered identities, filing copies in Thunderbird's Sent folder.91MITWhy this server?
Allows reading and searching local Thunderbird mail archives (.mbox format) by indexing exported messages.
Why this server?
Provides tools to control the Thunderbird email client, including mail search, folder management, compose, settings, calendar, and message filters.
AlicenseAqualityAmaintenanceEnables AI agents to control Thunderbird directly, including mail, folders, contacts, calendar, filters, and settings, through its own internals.504MITWhy this server?
Offers email rendering analysis and compatibility previews for the Thunderbird email client.
AlicenseAqualityAmaintenanceMCP server for email compatibility analysis. Analyze, preview, diff, and fix HTML emails across 15 email clients — plus capture real screenshots and create shareable links with an optional API key.13287 npm7MITWhy this server?
Emulates Mozilla Thunderbird client for IMAP compatibility with email providers, specifically to solve authentication issues with 163 email.
FlicenseBqualityDmaintenanceA Model Context Protocol service for comprehensive email management that supports multiple email providers, with complete functionality for viewing, organizing, and batch processing emails.10-Why this server?
Provides tools for interacting with a local Thunderbird installation, including searching and paginating mbox emails, reading message bodies and attachments, opening the native compose window, creating drafts, and sending explicitly authorized emails through Thunderbird.
AlicenseNot gradedqualityBmaintenanceEnables AI agents to search and page through local Thunderbird mbox mail, read message bodies and attachments with SHA-256 verification, open native compose windows, create native drafts, and send explicitly authorized email through existing Thunderbird identities over MCP stdio. Queries stay read-only and never modify the mbox, while account authentication and real delivery remain with Thunderbird.MITWhy this server?
Provides tools for searching and reading Thunderbird emails, including full-text search, retrieving threads, messages, folders, accounts, and stats, using Thunderbird's local index without requiring IMAP credentials.
AlicenseNot gradedqualityDmaintenanceEnables searching and reading Thunderbird emails locally through MCP, using the mail client's own index for offline, credential-free access.MITWhy this server?
Exposes Thunderbird's email capabilities as machine-readable API tools, allowing AI agents to interact with email data while Thunderbird manages all IMAP/SMTP credentials and account state.
AlicenseNot gradedqualityBmaintenanceGive AI agents full read/write email access through Mozilla Thunderbird. Zero credentials touch the agent — all IMAP/SMTP stays in Thunderbird. 12 MCP tools, 38 CLI commands, signed Thunderbird 128+ extension. Tested at 22 accounts / 249k messages.66 npm57MITWhy this server?
Provides an optional Agent Chat add-on and MCP bridge for Thunderbird, enabling a local LLM agent to exchange chat messages through a token-protected local listener without accessing email or modifying Thunderbird's native chat interface.
AlicenseNot gradedqualityBmaintenanceEnables MCP-compatible AI clients to access and manage a mailbox over IMAP and SMTP, including reading, reviewing, and summarizing email while keeping credentials outside the repository.MIT