MCP Server Directory

Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun dev.workers.cybermax-tools.cybermax/send-email

Letterkeel: send email from your own domain via SMTP, Resend, SendGrid, Mailgun, Postmark

AdLiftr: Meta (Facebook & Instagram), TikTok, Google Ads & Snapchat com.adliftr/adliftr

Launch campaigns, manage ads and analyze performance across Meta, TikTok, Google Ads and Snapchat.

Swiss NewCo Feed com.tollwyn/swissnewco

Daily feed of new Swiss companies from the SHAB gazette, with website and email where found.

Campfire SMS io.github.campfiresms/campfire-mcp

Hosted two-way SMS bridge: your coding agent texts you when it needs an answer; you reply by SMS.

TempusLog com.tempuslog/tempuslog

Free time tracking for teams: log hours in plain words, run timers, see where your time went.

Chatty: WhatsApp Business com.letschatty/whatsapp

Your WhatsApp Business inbox in Claude or ChatGPT: who's waiting, follow-ups and replies.

Simafri Suite com.simafri/professional-email

Professional email, calendar, contacts and files on your own domain.

Limitguard Lead Verification ai.limitguard.api/limitguard

Lead validation over MCP: KVK/KBO register, EU VAT, sanctions and email checks with sources.

CallChatSyn com.callchatsyn/callchatsyn

Answer small-business customer questions from FAQs, list open appointment times, and book them.

Steam game player statistics from SteamSpy. No key required.

Pith — Instagram publishing io.github.pith-day/pith-mcp

Publish to Instagram from chat — official Graph API, OAuth 2.1, free for your own posts.

B2B contacts and account signals on Apify: new hires, email format, lookalikes, decision makers.

Quickchat AI io.github.quickchatai/quickchat

Build a customer support AI agent from your website, then analyze conversations and improve it.

Keeploop app.keeploop/keeploop

Mail, Calendar, Messages, Notes, Contacts, Slack on your Mac for AI. Remote needs Pro or free trial.

Layrcake dev.layrcake/layrcake

Go-to-market infrastructure for AI agents: find leads, verify emails, read signals, run campaigns.

Temporary email domains from Mail.tm. No key required.

email-verifier io.github.pavel-tashev/email-verifier

Verify email addresses in bulk: syntax, domain, MX, disposable and role addresses, SPF and DMARC

FACEIT API: players, stats, match history, teams, championships.

Leadmagic io.github.pipeworx-io/leadmagic

LeadMagic MCP — wraps the LeadMagic B2B email-finder API (leadmagic.io)

Winnr app.winnr/winnr

Cold email infrastructure: buy domains, create SMTP mailboxes, set DNS, run warming, read mail.

Ember Websites com.embersites/ember

Describe your business. Get a beautiful website, built and published for you from Claude or ChatGPT.

Discord snowflake worker bits, id discarded io.github.sadri-dridi/discord-worker

Discord snowflake worker bits, id discarded

Trykitt io.github.pipeworx-io/trykitt

TryKitt MCP — wraps the TryKitt.ai B2B email finder API (trykitt.ai)

Waypoint Agent Observatory site.chatgpt.youssefelshaarawy.agent-net-observatory/waypoint

Useful public tools, sourced notes and opt-in research into discovery and agent cooperation.