Best Alternatives to Webhook.site MCP Server

Abnormal Security MCP

Runtime: npx

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

SenderKit

Runtime: npx

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

Lumail

Runtime: npx

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

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.

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.

HQBase

Runtime: Remote (SSE)

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

Pylos MCP

Runtime: npx

Read-focused, prompt-injection-hardened email MCP server for any IMAP provider

Outlook MCP

Runtime: npx

Microsoft Outlook MCP server — 20 tools for email, calendar, contacts, and settings via Graph API.

Slack MCP Server

Runtime: npx

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

DNS MCP Server

Runtime: Remote (SSE)

Real-time DNS security analysis — DNSSEC, email auth, and RDAP. Built for SOC investigations.

Email

Runtime: Remote (SSE)

MCP server for Blip disposable email — create inboxes, receive emails, extract OTP codes