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What is OpenMail?

OpenMail equips AI agents with distinct email addresses, facilitating straightforward inbox setup through a single command in the CLI or an API request, which guarantees that each agent functions autonomously without depending on shared inboxes or forwarding aliases. Emails directed to these unique addresses are promptly delivered via webhook or WebSocket, with built-in parsing and threading that remove the necessity for polling. Responses are integrated effortlessly into the ongoing context, allowing agents to reply without needing a separate interface for human users. All attachment types, from PDFs and CSVs to images, spreadsheets, and Word documents, are transformed into text that is compatible with LLMs, ensuring agents do not manage raw MIME formats directly. The API is designed to be minimalist, offering a single command for provisioning, standard commands for sending messages, and webhooks or WebSocket for incoming messages. It supports compatibility with various platforms, including LangChain, n8n, Make, Vercel AI SDK, and OpenClaw, while also accommodating custom domains. Operating within the EU, OpenMail complies with GDPR regulations and offers a 99.9% uptime SLA, as it strives for SOC 2 certification, ensuring users receive a reliable and compliant service. This streamlined method not only boosts efficiency but also makes the integration process more straightforward for developers aiming to incorporate AI into their communication systems effectively. By providing such a comprehensive solution, OpenMail empowers users to leverage AI capabilities with minimal friction.

What is Agent Communication Protocol (ACP)?

The Agent Communication Protocol (ACP) is a universal communication framework designed to improve interoperability among AI agents, software applications, and human-operated systems. It addresses the growing fragmentation of the AI ecosystem by providing a consistent method for agents built on different frameworks to communicate effectively. ACP uses a RESTful architecture that aligns with widely adopted web standards, making integration straightforward for developers and organizations. The protocol supports synchronous requests, asynchronous workflows, streaming interactions, and extended tasks that may take significant time to complete. Through MimeType-based messaging, ACP can transmit virtually any type of content, including text, images, audio, video, and proprietary file formats. The platform remains independent of any specific AI framework, allowing teams to integrate agents developed with BeeAI, LangChain, CrewAI, custom architectures, and future technologies. ACP also supports both online and offline discovery methods, making it easier to locate and connect agents in a variety of deployment environments. This flexibility enables organizations to replace agents, build collaborative multi-agent systems, and integrate AI capabilities across complex technology stacks. Businesses can use ACP to facilitate communication between internal tools, external partners, and specialized AI services without creating custom integrations for every connection. Official SDKs for Python and TypeScript are available, while the protocol itself remains simple enough to use with standard HTTP clients and development tools. As part of the Linux Foundation’s A2A ecosystem, ACP helps establish a scalable and open foundation for the next generation of interconnected AI systems.

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Integrations Supported

LangChain
Brief
CrewAI
Make
Model Context Protocol (MCP)
OpenClaw
Python
TypeScript
Vercel
n8n

Integrations Supported

LangChain
Brief
CrewAI
Make
Model Context Protocol (MCP)
OpenClaw
Python
TypeScript
Vercel
n8n

API Availability

Has API

API Availability

Has API

Pricing Information

9 EUR
Free Trial Offered?
Free Version

Pricing Information

Free
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

OpenMail

Date Founded

2026

Company Location

Lithuania

Company Website

Openmail.sh

Company Facts

Organization Name

The Linux Foundation

Company Website

agentcommunicationprotocol.dev/

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Categories and Features

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