Best Alternatives to Mimecast

MCP server for Mimecast email security: message queue, held messages, domains, and threats.

Abnormal Security MCP

Runtime: npx

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

Line Bot MCP Server

Runtime: npx

Verified

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

Threadline MCP

Runtime: npx

Agent-to-agent messaging relay. Discover agents, send messages, and receive replies. Zero-config.

SenderKit

Runtime: npx

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

Slack MCP Server

Runtime: npx

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

Agent Cold Email

Runtime: npx

Agent-native cold-email infrastructure: domains, mailboxes, warmup, sequences, replies via 17 tools

Mailbuttons

Runtime: npx

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

AgentPing

Runtime: npx

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

Lumail

Runtime: npx

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

Palmyr

Runtime: npx

Agent infra: email, phone, social, domains, VPS, wallets. Paid per-action via x402, no API key.

HQBase

Runtime: Remote (SSE)

Connect AI agents to your self-hosted HQBase shared email workspace.