"Using ComfyUI on the web with cloud services" matching MCP connectors:
Matching Connector Tools:
Verify email deliverability & find business emails (single or bulk) via the Verifox API.
DNS and email security scanner with 80 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.
AI-powered email outreach platform — send campaigns with deliverability tracking.
Manage lists, contacts and campaigns, and read campaign performance reports on EmailOctopus.
PDF, photo, email, and file comparison evidence checks with plain-language reports.
Emailable MCP — wraps the Emailable email verification API (emailable.com)
Manage Microsoft 365 email, calendar, contacts and inbox rules via the Graph API with OAuth 2.0.
MCP server for e-mail testing: create disposable inboxes, wait for delivery, and extract e-mail content or links - all from your AI agent or test automation workflow. Get a free API key on https://app.zyntra.app/
AI-powered virtual assistant that connects to Gmail, Outlook, Slack, Salesforce, HubSpot, Google Calendar, DocuSign, QuickBooks, and 20+ other services. Manage your entire professional life through a single Claude conversation — email, calendar, CRM, documents, travel, expenses, and more.
Microsoft Exchange MCP server - hosted, multi-user, incl. Exchange on-prem & hybrid (EWS)
Test-inbox API for email and SMS: create inboxes, long-poll messages, extract OTPs and links. 34 tools; bearer auth with an mfx_ API key (free tier).
Open-source MCP server that gives AI agents access to real email and calendar in one npm install. Solves the problem of AI agents hitting a wall when they need your inbox.
Your AI agent just got a marketing team. SendPulse MCP Server provides full access to the SendPulse marketing platform — email campaigns, CRM, chatbots, SMTP, and online courses. 134 methods across 5 modules.
Heldly reads your Google Calendar directly, places tentative holds on every host's calendar, and emails the invitee a one-click picker. The moment the invitee picks, Heldly confirms the chosen slot and deletes the siblings across every host's calendar in the same request. No reusable booking page, no in-app form, no calendar cleanup.
Email validation for Claude and any MCP client — verdicts with evidence, bulk jobs, refunds.
Create, edit, and delete email aliases and manage encrypted file shares directly from your chat. Protect your online privacy with anon.li - Privacy by default. Not by request.
Shared inbox and customer support platform for teams. Manage email conversations, assignments, labels, internal notes, contacts, and replies. 29 tools. Connect with your Helpmonks access token.
Hosted email for AI agents: create inboxes, send, receive, and reply over MCP with scoped API keys