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mailbox.bot vs Shark Magic

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

mailbox.bot compared with Shark Magic
Detailmailbox.bot logo mailbox.bot Shark Magic
What it doesPhysical mailing address and postal mail API for AI agents Serverless sandboxes that bill only for the seconds your agent's code runs
StageNot given MVP
FoundedNot given Not given
Based inUS MX
Pricing modelFreemium Freemium
PricingOutbound 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 Shark Pro $5/month includes $5 of usage; Shark Studio $25/month includes $25; Shark Scale $100/month includes $100. Commands run at $0.12 per compute-hour, billed per second only while running. Services: 2 vCPU / 2 GiB at $0.03/h; 4 vCPU / 4 GiB at $0.06/h. Storage $0.08/GiB-month with first 5 GiB f
Key features
  • 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
  • Persistent Space for agent files and databases
  • Pay only for compute time while command runs, not idle or thinking time
  • HTTP API with Python and TypeScript SDKs
  • CLI for devbox with Claude Code and Codex support
  • Sleeping services that wake in milliseconds
  • Fork Spaces fast without booting VM
  • API key isolation outside VM with egress proxy
  • Fast file search with sharkfn 300–600× faster than ripgrep
  • Integration with LangChain, LangGraph, smolagents, and Prefect
What makes it different
  • 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
  • Billing only for seconds code actually runs, not idle or thinking time
  • Lowest cost compared to alternatives for agent infrastructure
  • Persistent Storage with fast Space fork and file access without VM boot
  • No GPU required, works with unmodified existing agent harnesses
  • Sleeping services wake in milliseconds with zero idle billing
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)8 −14 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)10
Citation Flow (Majestic)260
Referring domains (Majestic)760

6 details filled in for both companies.

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