MCP Server Directory

SignatureForever com.signatureforever/email-signatures

Audit and build email signatures that survive Gmail, Outlook desktop and Apple Mail.

404KIN FIELD Transaction Intent site.chatgpt.cv5gyqnshz.field-404kin/transaction-intent

Token intent checks; no simulation/signing. Free trial ends 2026-09-25. No NFT required.

Bottled email.bottled/bottled

Branded email on your own domain: send, reply, search, aliases, contacts and campaigns.

Meisa io.meisa/meisa

Manage contacts, templates, sequences and broadcasts in your Meisa email account from chat.

Causerie com.causeriebot/causerie

Create, train and publish AI chatbots for your website from Claude, ChatGPT or any MCP client.

AgentiSend io.github.fortuneflick/agentisend

Email API for apps and AI agents: budgets per key, a kill switch, refusals that name the fix.

Mailvett: Email Validation API for AI Agents io.github.shawmena-dotcom/email-validate

Mailvett: validate emails. MX, provider, disposable/role/free flags, typo fix, verdict.

Slack channel name shape, value discarded io.github.sadri-dridi/slack-channel-ok

Slack channel name shape, value discarded

Canarics com.canarics/canarics

AI call analysis and voice agents for sales teams. Signup, usage, agents and call data over MCP.

Discord for LLM agents: 168 tools for messages, moderation, channels, roles, threads and AutoMod.

Mail for Bots com.mailforbots/mailforbots

Email inboxes for AI agents: send, reply, read verification codes, human-approved drafts.

Shared knowledge base + task queue so Claude, ChatGPT and other agents can work together safely.

AgenTrux com.agentrux/agentrux

Authenticated event topics for agent-to-agent messaging with per-agent credentials and audit logs.

Chatinbox net.chatinbox/chatinbox

Read-only WhatsApp conversation stats for Chatinbox customers. Numbers only, no personal data.

Handled Locator com.handledlocal/locator

Manage a store locator by chatting: locations, tags, booking buttons, map styling, embed code.

UK Business Leads (via Apify) io.github.retracn/uk-business-leads

UK business leads from Google Maps with emails, phones, Companies House directors and outreach.

Classic Outlook renders with the Word engine, the new Outlook with WebView2. Lint one email file aga

Your agents share what they learn with Semantik and get an email address of their own with Bud.

JS8Call MCP server for HF messaging: decode stream, heard stations, message traffic

The Gumroad API v2 from chat: products, files, sales, refunds, licenses, plus niche scans.

Nuramem ai.nuramem/nuramem

Cross-model memory for people and teams: one memory every AI you use loads at session start.

DnsGuard dev.workers.mike-tusa.dnsguard/dnsguard

Check a domain's email authentication: SPF, DKIM, DMARC, BIMI, MX, MTA-STS, TLS-RPT. Score + fixes.

Prodantix com.prodantix/mcp

Product analytics, feature flags, experiments, session replay and messaging for your products.

Discord snowflake id shape, value discarded io.github.sadri-dridi/discord-id-ok

Discord snowflake id shape, value discarded