Best Alternatives to Mbox MCP

Abnormal Security MCP

Runtime: npx

Abnormal Security email threats, cases, and reporting in your terminal and your AI agents.

Line Bot MCP Server

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Verified

Connects an AI agent to LINE Messaging API for messaging, user profiles, quotas, followers, and rich-menu management.

Slack MCP Server

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MCP server providing Slack workspace data access with message history, threads, DMs, user info, and optional message posting.

SenderKit

Runtime: npx

Build and send email, SMS, and push straight from your AI agent.

Mailbuttons

Runtime: npx

Governed email for AI agents: sandbox inboxes, server-side policy gate, tamper-evident audit.

Imap MCP Server

Runtime: npx

IMAP/SMTP MCP server to search, read, organize, send, reply & forward email for AI assistants

AgentPing

Runtime: npx

Let your AI agent notify you by email, Slack, Discord, or webhook. One tool: send_notification.

Microsoft Outlook MCP

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Microsoft Outlook (mail) MCP server — read, search, and send email through Microsoft Graph.

Sentfromai MCP

Runtime: npx

Email for AI agents: inboxes, send/reply/forward, search, threads, webhooks — 21 SentFromAI tools.

Emailmd

Runtime: npx

Convert markdown to email-safe HTML with linting and live preview via an MCP server or local CLI.

Lumail

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Official Lumail email marketing MCP for campaigns, subscribers, and workflows.

MCP Emails

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Read, search, send, organize, draft and schedule email across your inboxes from any MCP client.