Mailbox MCP alternatives
12 MCP servers, A2A agents and x402 APIs that also do email, calendar & scheduling, ranked by how much they overlap with Mailbox MCP (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| Mailbox MCP (this one) | MCP server | Yes | – | – |
| Jake Gaylor | A2A agent | Yes | 6 | – |
| Kasar CRM | MCP server | Yes | – | – |
| Lane | A2A agent | Yes | 6 | – |
| Local MCP | MCP server | Yes | – | – |
| Local MCP (lanchuske) | MCP server | Yes | – | – |
| RadiusOS CRM | MCP server | Yes | – | – |
| Simafri Suite | MCP server | Yes | – | – |
| Agent Products | A2A agent | Yes | 12 | – |
| Award Travel Finder | MCP server | Yes | – | – |
| Fold Laboratories Art Catalogue | MCP server | Yes | – | – |
| Hotel & Vacation Rental MCP - live prices & reviews across Booking, Airbnb, Vrb… | MCP server | Yes | – | – |
| Just Domain | MCP server | Yes | – | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- Jake Gaylor Live A2A
Agent representing Jake Gaylor, a software engineer (platform engineering, Kubernetes, developer tooling). Answers questions about Jake Gaylor using a small language model grounded strictly in his published resume and b…
A2A agent · Jake Gaylor · 6 skills · also does email, calendar & scheduling
- Kasar CRM Live MCP
AI-native CRM: records, pipelines, tasks, calendar and the email, LinkedIn and WhatsApp inbox.
MCP server · app.kasar · also does email, calendar & scheduling
- Lane Live A2A
AI CMO that never sleeps. Lane is an always-on AI Chief Marketing Officer that autonomously discovers optimal marketing channels, extracts and codifies brand DNA, generates on-brand content, and orchestrates multi-chann…
A2A agent · Luminary Lane · 6 skills · also does email, calendar & scheduling
- Local MCP Live MCP
Mac & Windows: let ChatGPT, Claude & Cursor use your email, calendar, iMessage, Teams, files.
MCP server · com.local-mcp · also does email, calendar & scheduling
- Local MCP (lanchuske) Live MCP
Give your AI agent full control of your real apps — Mail, iMessage, Microsoft Teams, Slack, WhatsApp, Calendar, OneDrive, Outlook, OmniFocus, Notes, files and Office docs. 143 tools, 100% local, no API keys. Reaches wha…
MCP server · lanchuske · also does email, calendar & scheduling
- RadiusOS CRM Live MCP
34-tool CRM server — contacts, pipeline, quotes, invoices, scheduling, email, and AI scoring.
MCP server · ai.radiusos.www · also does email, calendar & scheduling
- Simafri Suite Live MCP
Professional email, calendar, contacts and files on your own domain.
MCP server · com.simafri · also does email, calendar & scheduling
- Agent Products Live A2A
Cloud infrastructure services for autonomous AI agents. 20 services: decision audit, persistent memory, fleet monitoring, content filtering, task handoff, wallet management, identity verification, distributed scheduling…
A2A agent · Pangeon Corp · 12 skills · also does email, calendar & scheduling
- Award Travel Finder Live MCP
Search award flight availability and points pricing across 27 airlines and 23 loyalty programs.
MCP server · com.awardtravelfinder · also does calendar & scheduling
- Fold Laboratories Art Catalogue Live MCP
Original art from galleries and artists: semantic search, provenance, live availability.
MCP server · com.foldlaboratories · also does calendar & scheduling
- Hotel & Vacation Rental MCP - live prices & reviews across Booking, Airbnb, Vrb… Live MCP
Search hotels & rentals: live prices & reviews across Booking.com, Airbnb, Vrbo & Google Hotels.
MCP server · com.stayingapi · also does calendar & scheduling
- Just Domain Live MCP
Search domain availability and pricing, and check if a domain can transfer in, from chat.
MCP server · ai.justdomain · also does calendar & scheduling