"An email protocol for sending and receiving messages" matching MCP servers:

Enables fuzzy search and browsing of Apple Messages (iMessage/SMS) with contact resolution, filtering by sender or date, and context display through CLI, MCP, or Claude Code plugin.

Integrates with Mailtrap Email Platform to enable sending transactional emails via API.

MCP server for reading and responding to local macOS Messages from clients like Claude Desktop and Codex.

Enables sending, reading, searching, and managing SMS/RCS messages through Google Messages web interface, requiring a persistent browser session paired with a phone.

Enables fuzzy searching and browsing of Slack messages, users, and channels via CLI or MCP server integration.

An MCP server that allows Claude Desktop or Cursor to send emails directly using Resend's API, eliminating the need to copy-paste email content.

Enables AI coding agents to communicate and coordinate through a durable, vendor-neutral message bus with support for threads, tasks, presence, and webhooks.

Enables sending and receiving email over generic IMAP and SMTP, with tools for searching, reading, drafting, attaching files, managing folders, and waiting for new messages.

Provides AI agents with real email infrastructure, enabling them to create inboxes, send/receive messages, and extract verification codes from incoming mail.

Enables Claude on macOS to read, search, and send iMessage, SMS, and RCS messages, with tools for stats, chat history, attachments, and message composition.

Autonomous DeFi yield for AI agents on Base. Query APY rates, agent status, payment splits, and referral stats. 4 read-only tools + 1 resource.

A simple MCP server that enables users to send emails using Resend's API, integrating with tools like Cursor and Claude Desktop for seamless email composition and delivery.

An MCP server that provides AI agents with a persistent, agent-native email mailbox for sending, receiving, and managing emails through bounded-context retrieval, idempotent operations, and explicit acknowledgement.

A lightweight Docker-based email sending microservice that provides both REST API and MCP (Model Context Protocol) tools for sending emails, enabling AI agents to send email notifications.

An MCP server that enables interaction with Nexmo's Messages API, allowing agents to send and manage messages across various channels via natural language commands.

Enables real-time email verification via MCP tools, checking syntax, MX, disposable domains, and optional SMTP probe to determine deliverability with a VALID/RISKY/INVALID verdict.

Sendmux is an email inbox API and email API for AI agents. Use this MCP server to let authorised agents work with Sendmux mailboxes, inbound email, clean JSON parsing, webhooks, outbound sending, provider routing, logs, billing, and team controls.

Trust infrastructure for the agent economy.

MCP server for parsing, validating, building and explaining FIX protocol trading messages — offline, no API keys.

An MCP server that provides AI trading agents with persistent, outcome-weighted memory to learn from historical performance and detect behavioral biases. It enables agents to automatically adjust strategies and optimize position sizing based on context-aware recall of past trade outcomes.