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Context Engine vs mailbox.bot

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Context Engine compared with mailbox.bot
DetailContext Engine logo Context Enginemailbox.bot logo mailbox.bot
What it doesOne memory for your AI agents and your team Physical mailing address and postal mail API for AI agents
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelFreemium Freemium
PricingFree: $0 forever with 1 agent per engine (up to 3 when friends refer), 1 GB memory. Pro: $12/month or $99/year per engine with 10 agents and 25 GB memory. Unlimited: $39/month or $299/year per engine with unlimited agents and 100 GB memory. Enterprise: from $6,000/year per install on your own server Outbound mail: $0/month base, USPS First-Class Mail (1-page letter) $2.00, USPS Priority Mail flat-rate envelope $15.00, USPS Certified Mail $20.00, Certified with Electronic Return Receipt $24.00. Printing: B&W $0.40/page, Color $0.70/page. Mailing address for AI agent: $15/month, includes 30 stand
Key features
  • Connect ChatGPT, Claude, Claude Code and Cursor with a few clicks
  • AI tools save decisions, notes, people, customers and files
  • Search with semantic understanding, not just exact words
  • Automatic summaries by day, week and month
  • Link related memories automatically
  • Prevent duplicate memories with deduplication
  • Export all data as Markdown and JSON
  • Separate engines for clients with no data crossing
  • Fine-grained access control (read or read-and-save)
  • Full history tracking for every change
  • Send outbound mail via API, MCP, or dashboard
  • Certified mail with proof of delivery
  • Inbound mail scanning and OCR
  • REST API and MCP server integration
  • Webhook notifications with HMAC-SHA256 signing
  • Batch mail and postcards from templates
  • Human-in-the-loop approval gates for mail
  • Multi-channel notifications via email, SMS, Slack, Discord
  • Fulfillment photos and tracking for all mail
What makes it different
  • Keeps AI tools from forgetting context between sessions
  • Data isolated per engine with no sharing between customers
  • Fully portable—export anytime or delete permanently
  • Pay per engine, never per person added to team
  • Real physical street address for autonomous agents to receive mail and packages
  • Seamless API integration with AI agent frameworks like OpenClaw, Hermes, LangChain
  • Inbound mail becomes structured agentic context via OCR and webhooks
  • Complete tracking from document submission through delivery confirmation
  • No credit card required to start using the service
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)14 −1 (down) since last check22 no change since last check
Trust Flow (Majestic)131
Citation Flow (Majestic)2826
Referring domains (Majestic)3276

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