stalwart-jmap-mcp
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- FlicenseNot gradedqualityFmaintenanceMCP server exposing JMAP email and Sieve script operations as tools, enabling mailbox management, email creation, search, flagging, and Sieve script management.2-
- AlicenseNot gradedqualityAmaintenanceUnofficial MCP server that lets AI assistants read, search, send, and organize Fastmail email, manage contacts, and handle calendar events through the Fastmail JMAP and CalDAV APIs. It also supports attachments, threading, drafts, bulk operations, and label-versus-folder management.MIT
- AlicenseNot gradedqualityBmaintenanceEnables Claude and other MCP clients to search, read, write and organise mail on Stalwart servers over JMAP — including folders, Sieve filters, out-of-office replies and one-click unsubscribe — with draft-first and confirmation safeguards against prompt injection. A separate admin endpoint additionally exposes account, domain, mailing-list, queue, IP, log and task management through Stalwart's JMAP management API.MIT
- FlicenseNot gradedqualityAmaintenanceThis is an unofficial MCP server that gives AI assistants access to Fastmail's JMAP API for managing email, contacts, and calendar data, including sending, searching, and organizing messages, handling attachments, and creating or updating events.-
- AlicenseAqualityCmaintenanceAn MCP server that provides AI assistants with full access to Fastmail accounts for managing email, contacts, calendars, and file storage. It implements 42 tools across JMAP, CardDAV, CalDAV, and WebDAV protocols to enable comprehensive account interaction through natural language.48MIT
- AlicenseNot gradedqualityDmaintenanceA minimal MCP server for reading, searching, managing, and sending email over IMAP and SMTP.MIT
TDQS
Scored across 39 tools
Most tools target distinct resources (accounts, domains, queue, IPs, emails), but list_accounts and list_principals overlap since accounts are principals of type 'individual', and list_objects can list many types already covered by dedicated list tools. Descriptions mostly clarify, but the duplication creates minor ambiguity.
All tools use the stalwart_ prefix and mostly follow verb_noun naming (list_accounts, create_domain, delete_queue_message). Exceptions like server_info (noun-only) and queue_pause/queue_resume (noun-verb instead of verb-noun) break the uniform pattern, but the overall style is still predictable.
With 39 tools, this server is excessively large for an MCP interface. Even for a broad mail server admin domain, the sheer number of tools makes selection harder and suggests over-fragmentation, exceeding the 25+ threshold for 'too many'.
The tool set covers many admin operations (accounts, domains, queue, IP blocks, mailing lists) but only provides read-only access to identities, vacation responses, and Sieve scripts—no create/update/delete for these. This leaves notable gaps for full lifecycle management.