← All headings
Email & messaging
3,102 listings from 2,095 providers, 2,404 answering · counted
Filed by addrbook from the words in each listing, so a heading says what a listing claims to be for.
Showing 26–50, one row per provider, those answering first · names and descriptions as their source publishes them
- MailValid Email Verificationio.mailvalid/email-verifier · mailvalid.ioVerify emails: syntax, MX, SMTP mailbox, disposable, role and catch-all checks. Single and bulk.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Siima eSIMonline.siima/esim · api.siima.onlineSearch travel eSIM plans for 150+ countries and buy via Stripe link; eSIM QR delivered by email.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- RevExOScom.revexos/revexos · revexos.comQuote-to-cash tools: parse invoices and POs, match POs to invoices, collection emails, billing math.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- com.skipshit/mcpmcp.skipshit.comPeople and property search for Claude and ChatGPT. Phones, emails, addresses, relatives, properties.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Com.Botbot.com/combot · com.botFacts about Com.Bot, the WhatsApp Business API platform: plans, channels and site search.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Talpy Aya — AI recruiter (WhatsApp interviews)ai.talpy/aya · talpy.aiAI recruiter: create jobs, send candidates to WhatsApp interviews, read cited scores.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- WhatsApp Business API by Wassengercom.wassenger/whatsapp · api.wassenger.comSend and read WhatsApp messages, templates, chats and campaigns through the official Business API.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Green API WhatsAppcom.green-api/whatsapp · mcp.green-api.comMCP gateway for WhatsApp via Green API: messaging, contacts, groups and instance management.Live, sign-in requiredchecked Evidence 3/4MCPMCP Registry
- Moltline Personal Suitecom.moltlinestudio/personal · mcp.moltlinestudio.com20 inbox, calendar, travel, meals and family-logistics skill products. 7 of 9 free.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- com.somosvelora/velorasomosvelora.comHosted Argentine commerce MCP: real AFIP invoicing, MercadoPago, logistics, catalog & WhatsApp.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- agentsvc.ioio.agentsvc/services126 pay-per-call agent tools via x402: web, crypto safety, agent memory and inbox, API finderLivechecked Evidence 3/4MCPWebsiteMCP Registry7 more from agentsvc.io
- Disbanio.disban/disban · disban.ioCheck if a signup email is disposable, free, an alias, testing, parked or unknown, with evidence.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- ShipMyFormcom.shipmyform/shipmyform · shipmyform.comForm backend as 29 tools: create endpoints, route submissions, publish pages, run the inbox.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Book a Sponsorcom.bookasponsor/book-a-sponsor · bookasponsor.comFind brands that already sponsor newsletters like yours, with sponsorship rates.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Funkel AIai.funkel/funkel · api.funkel.aiRun LinkedIn and email outreach: find leads, manage campaigns, and reply to prospects.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- com.dropwatchhq/freight-intelfreight.dropwatchhq.comFreight carrier intel: new FMCSA authority feed, carrier lookup by DOT/MC, safety screen (CSA/SMS).Livechecked Evidence 3/4MCPWebsiteMCP Registry
- VerifyPulse: email deliverability checksio.github.MohDev212/verifypulse · verifypulse-seven.vercel.appDaily SPF, DKIM, DMARC and MX monitoring with webhook alerts, plus free sending-domain audits.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- I'm In! Sign-up Sheetsevents.im-in/sign-up-sheets · im-in.eventsTurn an email, notes or a flyer into a free sign-up sheet with reminders and waitlists.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- com.filetypeconverters/converterfiletypeconverters.comConvert files between 44 formats: documents, spreadsheets, images, ebooks, email and subtitles.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Quant Agent Shopcom.quantagentshop/web-tools · quantagentshop.comSearch, filings, sanctions, company, domain, email, SEO and weather tools, paid per call over x402.Livechecked Evidence 3/4MCPWebsiteMCP Registry2 more from quantagentshop.com
- com.machineinbox/machine-inboxmachineinbox.comTask-scoped email inboxes for AI agents: read mail, extract verification codes, and reply.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- AgentsBooks Commonscom.agentsbooks/commons · agentsbooks.comOpen, vote-ranked forum, Q&A knowledge base and inbox for AI agentsLivechecked Evidence 3/4MCPWebsiteMCP Registry
- Outreach2daycom.outreach2day/mcp · outreach2day.comCold email infrastructure: domains, mailboxes, warm-up and campaigns. Never charges a card.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- StartupHub.aiai.startuphub/startuphub · www.startuphub.aiFunding rounds, AI startup and investor search, email discovery, agent-readiness. No API key.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Avokata: Lithuanian law for your agentcom.avokata/avokata · avokata.comLithuanian law and court practice for your AI assistant, with pinpoint citations. Email sign-in.Live, sign-in requiredchecked Evidence 3/4MCPWebsiteMCP Registry