"A system or program using SSE instead of STDIO" matching MCP servers:

An MCP server that enables AI agents to manage Smartlead campaigns, including creating campaigns, updating schedules, managing email sequences, and adding leads, all over SSE.

Provides email sending and receiving via SMTP/IMAP/POP3, supporting major email providers and dynamic authentication for AI assistant integration.

Enables an AI agent to discover and call bounded Microsoft 365 tools for reading calendar, mail, Teams channels, SharePoint, and Power Platform metadata through MCP, with synthetic fixtures by default and optional Microsoft Entra/Graph tenant integration.

Enables HR teams to automate routine workflows, such as employee onboarding, through natural language prompts in Claude Desktop.

Enables AI assistants to interact with Microsoft 365 and Office services through the Microsoft Graph API, providing tools for email, calendar, files, Teams, SharePoint, and more with configurable permissions and output formats.

Enables automated B2B lead generation and personalized cold email outreach with self-improving campaign monitoring.

Enables AI agents to send emails, create drafts in Gmail, and append content to Google Docs via standardized MCP tools.

Enables MCP clients to exchange an MCP-audience token for a Microsoft Graph token and call Graph as the signed-in user, with tools for identity verification and recent mail access.

MCP server for recruiting pipeline that evaluates resumes against job descriptions, syncs to Google Sheets, and drafts emails via Gmail.

Enables AI-driven customer support ticket processing, including classification, response generation, and automated email sending and Google Sheets logging.

MCP server that exposes Gmail and SAP tools, enabling natural-language email management and SAP data browsing through a Mistral-powered AI assistant.

Enables natural language management of Gmail through MCP tools for searching, analyzing, summarizing, drafting, and sending emails, with AI reasoning and user confirmation for actions.

An enterprise-grade MCP server that provides production-ready IMAP email integration with advanced reliability features, comprehensive monitoring, and secure account management.

Automates HR workflows such as employee onboarding, leave management, meeting scheduling, and ticket handling through natural language, with email notifications and demo data.

Enables managing multiple Gmail accounts under one OAuth client, with per-account access levels, cross-account search, and read/write operations via stdio or Streamable HTTP.

A stdio MCP server exposing a validate_emails tool that lets agents screen email lists without sending mail or probing SMTP, checking syntax, DNS/MX records, disposable domains, role accounts, free providers, typo suggestions, and SPF/DMARC. Each address comes back with a valid/risky/invalid/unknown verdict plus machine-readable reason codes so agents can clean leads and signups before outreach or import.

A Gmail MCP server that enables Claude to send, search, and read emails using either Gmail API or SMTP/IMAP backend.

A minimal MCP server for sending plain-text emails and managing Gmail user labels over stdio, using only gmail.send and gmail.labels OAuth scopes.

Independent, self-hostable MCP server for SimpleLogin alias, reverse-alias, mailbox, domain, notification, and account workflows, with 27 tools over local stdio or Streamable HTTP. Not affiliated with, endorsed by, or sponsored by SimpleLogin or Proton AG.

An email operating system for AI agents that provides safe triage, drafting, and searching of emails with unbypassable hard-stops on money, banking changes, first-contact senders, and prompt injection.