"Email clients and services for sending, reading and managing emails outside of Gmail" matching MCP servers:

Real-time email verification API with syntax, MX, disposable detection, role-based flags, quality score 0-100. Built for agent outreach pipelines with pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Find professional email addresses from name + company domain. Tests 15+ patterns against MX records with confidence scoring, with pay-per-call via x402.

Enables finding and verifying work emails for contacts through a waterfall of provider keys, with per-provider cost attribution and verification after each finder.

Provides interactive tools to explore AFAS customer data and employee leave information, including bubble charts, leave balance reports, and detailed leave cards.

Enables Claude Code to create HubSpot marketing email drafts from Markdown and Word documents with automatic image handling and brand guidelines.

Official Cursor plugin enabling natural-language management of your SideShift company—discovering creators, managing campaigns and contracts, communicating with your network, and inspecting analytics through a secure OAuth-linked MCP server.

Validates email deliverability, assesses domain credibility, and scores B2B leads from A-F to help prioritize outreach, with batch processing and a free tier.

Finds, filters, and verifies local-business leads on demand; every returned email carries a verification receipt (verifier, verdict, timestamp). Credit-based with per-key spend budgets; 25 free validated leads at signup.

Live LinkedIn data for AI agents: 44 tools for profiles, companies, jobs, posts, people search, job-change signals and email finding. Hosted remote server (streamable HTTP) - your agent never touches your own LinkedIn account. 300 free credits on signup, no card. Dockerfile in repo bridges stdio clients to the hosted endpoint via mcp-remote.

Unifies CRM and productivity tool APIs behind a single interface, letting AI agents and developers create, update, delete, and list records across Zoho, HubSpot, Odoo, Google Sheets, Gmail, and Google Calendar without handling platform-specific schemas.

Freento MCP is a native Magento 2 extension that implements the Model Context Protocol (MCP) — an open standard for connecting AI assistants to external data sources. This server acts as a secure, direct bridge between your Adobe Commerce / Magento 2 store and LLM-powered assistants (like Claude, ChatGPT, and others), allowing you to manage and audit your store using natural language.

Fetch fresh leads and verify emails in one MCP server

Enables reading operations, searching clients, and creating leads in SingleOps, the US green-industry field-service platform, through natural language commands.

Enables AI assistants to find and verify professional emails and phone numbers via the Enrow API.

Enables natural language interaction with HawkSoft insurance agency management data, including reading clients, policies, and claims, and writing log notes, attachments, and receipts.

Non-official MCP server for the Corymbus CRM, enabling natural language querying and modification of CRM data via MCP clients like Claude.

Enables Claude to interact with Jira, Salesforce, and n8n through MCP tools, allowing automated reading of Jira stories, deploying Salesforce metadata, and triggering n8n workflows.

Enables managing Recruitee/Tellent recruiting pipelines from Claude, including reading roles and candidates, creating candidates, and writing evaluations and notes with previews and safe write operations.

MCP server that exposes Coherence XRM as tools for Claude, Cursor, Cline, and other MCP-compatible clients. The headline: chat_with_agent — send a message to your Coherence agent (Nash) from your agent and it can draft emails, create reminders, update records, post to social, create landing pages, and more, all under your workspace's approval rules.

Enables AI assistants to interact with Workadu data through natural language, managing orders, customers, services, invoices, payments, assets, and asset movements.