Communication

MCPNav listings

Showing 109–120 of 285 attributed MCPNav entries in the 2026-10-09 snapshot. This is a licensed subset of the category’s 580 deduplicated directory records.

Source coverage: MCP.so 318 · MCPNav 285. Catalog counts can overlap; the listing cards below contain only MCPNav records.

MM

macrocosmos-mcp

Directory record

Real-time X, Reddit and YouTube data with filtering by search phrase, user and date.

CommunicationMCPNav
MM

mail-mcp

Directory record

Multi-account email over IMAP, SMTP, Exchange Web Services and Microsoft Graph: read, search, send, reply, forward, bulk operations and attachment downloads.

CommunicationMCPNav
MM

mailbox-mcp

Directory record

Physical mail API for AI agents: send letters, certified mail, postcards and batch mailings with cost previews, approval controls, tracking and webhooks.

CommunicationMCPNav
M

MailFlat

active

io.github.MailFlat/mailflat-mcp

MCP provider published as MailFlat. Listed version: 0.9.2.

Directory description: Real email inboxes for AI agents: open an address, read the one-time code, send mail.

Registry data grade FFFCohort score 14/100Raw points 60/100Version 0.9.2MCPCommunicationMCPNav
Rating detail · five criteria
  • registry freshness and status · 15 points
  • registry identity · 25 points
  • registry metadata · 0 points
  • runtime definition · 5 points
  • structure and url validation · 15 points
RepositoryRegistry source
M

mailmcp

Directory record

Your mailboxes in ChatGPT and Claude: Gmail, iCloud, Fastmail, any IMAP. Passwords stay yours.

CommunicationMCPNav
M

MailProbe

active

dev.mailprobe/mailprobe

MCP provider published as MailProbe. Listed version: 1.1.0.

Directory description: Verify email addresses in real time: deliverability, disposable and role addresses, typo fixes.

Registry data grade CCohort score 74/100Raw points 80/100Version 1.1.0MCPCommunicationMCPNav
Rating detail · five criteria
  • registry freshness and status · 15 points
  • registry identity · 25 points
  • registry metadata · 0 points
  • runtime definition · 20 points
  • structure and url validation · 20 points
RepositoryRegistry sourceDeclared endpoint · streamable-http
M

mailsandbox

Directory record

MailSandbox (a fork of Mailpit) is a fast, zero-dependency email testing tool & API with a web UI, SMTP server, Postmark API emulation, and MCP server for AI-assisted debugging.

CommunicationMCPNav
M

mailwarden

Directory record

Gmail MCP server for email triage: search, labels, archive, trash, unsubscribe, snooze.

CommunicationMCPNav
M

Markaestro

active

com.markaestro/mcp

MCP provider published as Markaestro. Listed version: 0.3.3.

Directory description: Schedule, publish, and review social posts and analytics for a Markaestro brand.

Registry data grade ECohort score 67/100Raw points 80/100Version 0.3.3MCPCommunicationMCPNav
Rating detail · five criteria
  • registry freshness and status · 15 points
  • registry identity · 25 points
  • registry metadata · 0 points
  • runtime definition · 20 points
  • structure and url validation · 20 points
RepositoryRegistry sourceDeclared endpoint · streamable-http
MT

markdown-to-whatsapp

Directory record

Convert Markdown into WhatsApp formatting: tables drawn to fit the phone's monospace width.

CommunicationMCPNav
MM

marketplace-mcp

Directory record

Publish Nostr marketplace listings (NIP-15 + Shopstr kinds 30019/30402) so agents can run a store.

CommunicationMCPNav
MM

mattermost-mcp

Directory record

Mattermost API integration: list channels, read and post messages, manage threads and reactions, and monitor topics.

CommunicationMCPNav

Source: MCPNav public API · License and upstream attribution. MCPNav-added fields are CC BY 4.0; upstream source fields retain their listed licenses.

How to interpret this page: The overall category total combines third-party directory labels. The paginated cards show only the MCPNav subset, not every source record. Neither category membership nor these directory entries are Official MCP Registry categories, Trust Live evidence, Trust grades, safety verification, or endorsements.

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