"Finding MCP servers that support SSE or Streamable HTTP, excluding stdio transport" matching MCP servers:

Enables AI agents to analyze whether they should send an email, evaluating passive aggression and regret probability with a recommendation heavily weighted toward no.

Streamable HTTP MCP server for Gmail that enables AI agents to search threads, read messages, manage drafts, and organize the inbox via OAuth authentication.

Enables an AI agent to act as first-line customer support on top of Microsoft Dynamics 365 / Dataverse, reading incoming synced emails, looking up contacts and published knowledge articles, and drafting HTML-safe replies or escalating to a human as a Case. Runs draft-only by default with safeguards against prompt injection, duplicate replies, and unsafe recipients.

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

Streamable HTTP MCP server for Gmail enabling search, read, draft management, and inbox organization.

A mail service that connects private domain email to MCP clients, enabling sending (with auto signature), receiving, and reading emails through natural language via stdio or SSE transport.

AI-powered email assistant that enables sending, parsing, and managing emails using natural language. Provides 4 tools (smart_email, parse_email_intent, send_email, email_chat) with SSE/stdio transport support.

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.

Self-hosted, multi-account Gmail MCP server for Claude and Codex over Streamable HTTP, with explicit account aliases, owner-only OAuth, and encrypted credential storage. Supports searching and reading email, creating drafts, and optional sending and label changes.

An MCP server for Microsoft Graph, exposing 60 tools across calendar, email, meetings, Teams chat, files, people, directory, tasks, and OneNote over stdio or Streamable HTTP.

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.

A native MCP server for real-time B2B contact finding and SMTP email validation, scraping company websites, Discord, and Telegram to deliver live, verified contacts that AI agents like Claude and Cursor can query directly.

Register free *.pntr.dev subdomains and manage them from your AI assistant — DNS records, wildcard DNS, disposable email inboxes, and HTTP request capture for webhook debugging. 15 tools over stdio; hosted endpoint also available.

Automates job outreach by finding companies, discovering contacts, generating personalized emails with AI, and tracking campaigns.

Lets AI agents send email over SMTP and read, search, and manage email over IMAP or POP3 using app passwords or authorization codes, with attachment handling and support for common providers.

通过企业微信官方邮件API发送普通邮件，并支持查询邮箱信息，兼容stdio、sse和streamable-http传输方式。

An MCP server that exposes a mock email verification tool over stdio transport, providing structured JSON results with statuses valid, invalid, or risky.

Send transactional email and manage sending domains, templates, webhooks and suppressions with Groundmail. Runs locally over stdio or HTTP with an API key; a hosted OAuth server is also available.

Official Emailit MCP server: send transactional email and manage domains, contacts, audiences, templates, suppressions, webhooks, and API keys with an Emailit API key, over stdio or HTTP.

Enables AI agents to search, read, summarize, label, draft and reply to Naver Mail through Gmail MCP-compatible tools and search syntax, over IMAP/SMTP with EUC-KR-safe decoding. Runs as a remote Streamable HTTP + OAuth server on Cloudflare Workers plus a local stdio mode, so both cloud-hosted and desktop agents can connect.

Enables AI assistants to connect over streamable HTTP with bearer authentication to tools for agent lifecycle, email, phone, platform, vault, and browser extension management.

Enables finding B2B leads with verified work emails, finding and verifying email addresses, and running cold email outreach from any MCP client.

Enables MSPs and security teams to manage customer tenants, licenses and usage billing, and to run security operations such as searching events and secured emails, maintaining allow/block exception rules, and quarantining or restoring messages. It is exposed as a stateless, multi-tenant Streamable HTTP endpoint that takes credentials per request via headers.

gmail-mcp is a remote MCP server that exposes Gmail as a set of tools — search, read, label, draft, send — over streamable HTTP with OAuth 2.1. It runs on Cloudflare Workers under your own domain.

Enables AI assistants to read, search, send, schedule, and organize email across multiple IMAP/SMTP accounts, with provider-aware labels, drafts and templates, real-time IMAP IDLE watching, calendar extraction, analytics, and a guided setup wizard. Supports stdio and Streamable HTTP transports along with experimental OAuth2 for Gmail and Microsoft 365.

Enables Claude mobile and claude.ai to access your Spark Desktop mailbox by exposing the official Spark MCP server over authenticated Streamable HTTP, with safety gates for read-only and send permissions.

Enables AI assistants to read, search, send, manage, schedule, and analyze email across multiple IMAP/SMTP accounts from a single server. It also supports drafts and templates, provider-aware labels, real-time inbox watching with triage, verification-code capture, calendar extraction, and email analytics over stdio or Streamable HTTP.