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20 Best Email MCP Servers — compared and ranked, August 2026Ranked from 1,989 matching servers on stars, growth, downloads and maintenance. Updated .

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"Tools to Automate Sales Outreach Emails" matching MCP servers:

  • mcp-serial-bridge

    46nori
    A
    license
    A
    quality
    D
    maintenance
    Enables AI agents to control serial port devices (modems, instruments, embedded boards) via MCP tools for listing ports, connecting, and sending/receiving commands.
    3
    1
    MIT

  • silotek-serial-mcp

    JOCOIN94
    F
    license
    A
    quality
    B
    maintenance
    A headless MCP server that enables AI tools (like Claude Code) to read and analyze serial logs from embedded boards (ESP32, STM32) for firmware debugging, with read-only tools for log retrieval and a built-in web viewer.
    6

  • stm32-stlink-mcp

    phryniszak
    A
    license
    A
    quality
    C
    maintenance
    MCP server for debugging STM32 microcontrollers over ST-LINK using STM32CubeCLT tools (GDB, ST-LINK_gdbserver, STM32_Programmer_CLI) with session management, flashing, breakpoints, memory/register access, and expression evaluation.
    19
    GPL 3.0

  • ros-mcp

    husain-zaidi
    A
    license
    A
    quality
    D
    maintenance
    A Model Context Protocol (MCP) server for ROS 2 that enables GitHub Copilot and other AI agents to interact with ROS 2 systems. This server provides tools for monitoring, debugging, and managing ROS 2 nodes, topics, services, and TF2 frames.
    15
    48
    MIT

  • BLE MCP Server

    es617
    A
    license
    A
    quality
    C
    maintenance
    A stateful Bluetooth Low Energy (BLE) MCP server that enables AI agents to scan, connect, read/write characteristics, and subscribe to notifications on BLE devices.
    35
    17
    MIT

  • pymcuprog-mcp

    lucasgerads
    A
    license
    A
    quality
    C
    maintenance
    Enables AI tools to program Microchip AVR microcontrollers via natural language by wrapping pymcuprog, supporting USB HID debuggers and serial UART UPDI adapters.
    18
    1
    MIT

  • KiCad Context MCP

    yigitabi5444
    A
    license
    A
    quality
    A
    maintenance
    A read-only MCP server for AI agents to understand KiCad projects through progressive disclosure, providing compact summaries and drill-down tools for components, nets, traces, and ERC/DRC checks without blowing context budgets.
    7
    1
    MIT

  • serial-mcp

    davidalo
    F
    license
    A
    quality
    D
    maintenance
    MCP server for serial port communication. Provides tools to open, read, write, and manage serial ports through the Model Context Protocol.
    10

  • vivado-mcp

    mapleleavessssssss-wq
    A
    license
    A
    quality
    A
    maintenance
    A minimal MCP server that provides 25 tools and 5 hooks to control Xilinx Vivado EDA for FPGA development, including session management, Tcl execution, smart diagnostics, and IP debugging.
    30
    99
    Apache 2.0

  • quartus91-mcp

    alglb123
    A
    license
    A
    quality
    C
    maintenance
    Wraps Quartus II 9.1 command-line tools into MCP tools, enabling AI agents to create projects, assign pins, generate simulation waveforms, run simulations, compile, read reports, and program devices.
    16
    4
    MIT

  • BYO Server

    JasonPeng2019
    F
    license
    A
    quality
    C
    maintenance
    Headless local stdio MCP server for board-debug operations, allowing compatible clients to use tools for firmware debugging and board management.
    20
    1

  • ikmcp

    isakruas
    A
    license
    B
    quality
    B
    maintenance
    An MCP server that enables agents to build, test, and simulate complete ik firmware projects for 8-bit AVR microcontrollers, using real compilation and simulation tools.
    30
    1
    Apache 2.0

  • Betaflight MCP

    bvandevliet
    A
    license
    B
    quality
    B
    maintenance
    Enables AI assistants to control Betaflight flight controllers over serial via MSP and CLI, providing real-time sensor reads, full CLI access, and auto-generated variable tools for configuration and tuning.
    100
    23
    1
    AGPL 3.0

  • kicad-mcp

    Gato513
    F
    license
    B
    quality
    B
    maintenance
    Enables LLM agents to operate on KiCad by reading compressed schematics (TOON format), executing atomic tools, and updating context via delta and local area.
    1

  • siglent-sds-mcp

    wolog1
    A
    license
    C
    quality
    B
    maintenance
    Enables AI tools to remotely control a SIGLENT SDS800X HD series oscilloscope, configure acquisition, capture waveforms, and analyze signal quality safely through high-level SCPI tools.
    20
    1
    GPL 3.0
  • sbl-probe by soundbytelabs

    sbl-probeofficial

    soundbytelabs
    A
    license
    Not graded
    quality
    D
    maintenance
    Serial communication and protocol analysis MCP server that gives AI coding assistants direct access to serial ports for reading, writing, decoding, and capturing embedded device output.
    MIT
  • sbl-debugger by soundbytelabs

    sbl-debuggerofficial

    soundbytelabs
    A
    license
    Not graded
    quality
    D
    maintenance
    Enables AI assistants to debug ARM Cortex-M targets via GDB and OpenOCD, supporting attach, breakpoints, stepping, register/memory inspection, and SVD peripheral decoding.
    MIT