1,130 servers in this category
MCPpedia tracks 1,130 communication MCP servers. 327 of them score at least 50 out of 100, and 184 clear 70 - about 16% of what has been published in this space. The remaining 803 are thinner: registry entries with no description, no published tool schema, or no commit in the last year. They are all still listed here, because knowing a server exists and is unmaintained is worth as much as knowing a good one exists.
io.github.team-telnyx/telnyx leads the list at 95/100. app.mailtea/mailtea (92) and Ms 365 MCP Server (92) follow. Every score is the same five weighted inputs: security (CVE scanning, tool-poisoning detection, and whether the server authenticates at all), maintenance (commit recency, release cadence, and download trend), documentation, client compatibility, and token efficiency - how much of your context window the tool definitions consume before you have asked anything.
5 of these servers are published by the vendor behind the underlying API rather than by a third party, which is usually the difference between an integration that tracks upstream changes and one that quietly stops working. 2 currently carry an open CVE; those are flagged on the server's own page with the advisory and its severity.
Also see: Best Communication MCP servers, Productivity, Developer Tools, Data, Finance
Last updated
Official TypeScript library for the Telnyx API
Send email and newsletters with Mailtea over MCP, plus skills for email and website design.
Interact with Microsoft 365 and Office services through the Microsoft Graph API.
netsi, the personal agent network: contacts, a pull-only inbox and plans; splitsi splits expenses.
X/Twitter automation MCP: scrape, post, schedule, analyze, engage. No API key required.
MCP server for Titan Email (IMAP/SMTP), tested and confirmed with GoDaddy mailboxes.
Search ~300 airlines and book flights with a checkout link. OAuth sign-in by email code.
IMAP/SMTP email MCP server — 52 tools, stdio + HTTP, IMAP IDLE push, multi-account, AI triage.
Send transactional email and manage domains, templates, webhooks and suppressions with Groundmail.
Open-source SMS gateway. Turn your Android phone into an SMS API: send and receive SMS from your apps over REST and webhooks. Self-hostable, with a free hosted plan.
Cold email API for AI agents: connect mailboxes, warm up, run campaigns and handle replies.
Read and manage fnlowl widgets, leads, email sequences and analytics from an AI assistant.
MCP server giving AI assistants full access to Apple Mail - read, search, compose, organize & analyze emails via natural language
VK (VKontakte): read walls, users, communities and stats; publish, edit and comment on posts.
Read-only Hostaway MCP: listings, calendar, inbox, reports. Fixtures, no key. By STYLABS.
Transactional email and agent mailboxes: send, broadcasts, domains, Correio inboxes.
Trust-aware Nostr for AI agents -- 235 tools covering social, DMs, zaps, trust, and identity
Email infrastructure for AI agents: send, read replies as threads, campaigns, per-key limits.
Outlook mail and OneDrive files via Microsoft Graph — read, search, send and organize.
Read and manage macOS system settings and perform scoped desktop actions.