"A server for accessing an inbox or messaging system" matching MCP servers:

Enables AI agents to interact with ActiveNet OpenAPI services for managing organizations, activities, customers, facilities, and more.

Enables AI assistants to manage Bitrix24 CRM entities, tasks, project kanban boards, and Scrum sprints through an incoming webhook, requiring explicit user confirmation for all write operations.

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.

Enables AI clients to securely interact with Salesforce data using natural language, translating prompts into structured queries for analysis, reporting, and business insights.

Provides read-only access to the Planning Center People API, enabling natural language queries for people, households, background checks, and lists.

Enables AI clients to securely access and query Zoho CRM data using natural-language prompts, returning structured results for analysis and reporting. It supports sales pipeline tracking, lead analysis, team performance reporting, and other CRM use cases through self-hosted deployment.

Enables read-only access to InvoiceNinja data, including invoices, expenses, clients, and tax reports, for AI assistants like Claude.

Enables AI assistants to enrich contacts and build audiences via the YourICP API. Provides tools to set an API token, submit contact lookups by email or LinkedIn URL, and poll for enrichment results.

An MCP server for Freshdesk that identifies which tickets actually need a reply, and provides tools to read, draft, and respond to tickets while respecting your account's custom statuses.

An MCP server for Dolibarr ERP/CRM that lets Claude or any MCP-compatible client read and manage thirdparties, commercial proposals, contracts, and invoices directly.

Enables interaction with La Growth Machine (LGM) workspace via MCP, providing 27 tools for managing members, identities, audiences, leads, campaigns, inbox webhooks, messaging, website visitors, and conversations.

A production-ready MCP server that connects AI assistants to the D-Tools System Integrator platform, enabling natural language management of AV projects, clients, catalogs, tasks, service orders, and purchase orders.

Official Model Context Protocol server for 100Hires — the applicant tracking system for recruiting teams. Exposes the full 100Hires API v2 as 130 MCP tools, enabling AI assistants to manage candidates, jobs, applications, interviews, messages, and more.

Connects AI assistants to Mirlo workspace for CRM, messaging, and voice operations.

Enables Claude to interact with GoHighLevel CRM for contact management, messaging, calendar, and sales opportunities via 14 tools.

Enables seamless integration with Respond.io API for contact management, messaging, conversations, and workspace management through MCP.

Enables integration with Planfix CRM and task management system, allowing lead management, contact/company management, task creation/search/commenting, and report generation via the Planfix REST API v2.0.

MCP server that connects Claude Desktop to Atiendo24 platform, enabling management of appointments, customers, conversations, leads, analytics, and WhatsApp messaging through natural language.

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.

An open-source MCP server for the SharpSpring API (Constant Contact Lead Gen & CRM) that enables AI clients to read and write Leads, discover custom fields, and call any documented API method.