"research" matching MCP servers:

A read-only Gmail MCP server that searches email, fetches complete threads, and stores them as local Markdown and JSON for offline analysis by other agents.

Outbound sales agent for Claude Code. MCP server handles prospect list building, dedup, quotas, and structured rejection feedback, while the plugin runs per-prospect research, email writing, Gmail sending, and reply tracking. Open source, self-hostable.

Provides email discovery, verification, enrichment, and company research through a remote MCP server.

Enables personalized cold email outreach through research, drafting, template management, and deliverability checks, all locally with no required API keys.

Connects Claude to your iiinie workspace to draft email campaigns, manage contacts and content, create ad plans, run outreach, pull analytics, and research trends and keyword volume.

An MCP server bridging AI agents with enterprise productivity suites, enabling Jira automation, Microsoft Graph integration, and web research via Tavily.