Best Alternatives to PipesHub

MailFathom

Runtime: Remote (SSE)

Security-first, self-hosted email archive with read-only search and cited answers for 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.

Slack MCP Server

Runtime: npx

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

Google Workspace

Runtime: npx

Give AI agents access to Gmail, Calendar, Drive, and more — multi-account, manifest-driven

Sebastianall1977 Gmail MCP

Runtime: npx

Manage Gmail end-to-end: search, read, send, draft, label, and organize threads. Automate workflow…

DragApp MCP Server

Runtime: npx

Manage your Gmail shared inbox from Claude, Cursor, or ChatGPT — read, reply, search, organize.

AgentPing

Runtime: npx

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

Abnormal Security MCP

Runtime: npx

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

Threadline MCP

Runtime: npx

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

Gmail

Runtime: npx

Gmail MCP server — send, read, and search email. By Strider Labs.

Mail Index

Runtime: npx

Local-first, read-only MCP server for recall over your Gmail: search, contacts, threads, digests.

ScopeGate

Runtime: Remote (SSE)

Granular permission gateway for MCP agents. Per-agent scopes for Google Drive, Gmail, Calendar.