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MCPJam vs Spacemail for Claude

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

MCPJam compared with Spacemail for Claude
DetailMCPJam logo MCPJamSpacemail for Claude logo Spacemail for Claude
What it doesTest, debug, and evaluate MCP servers across every major AI client Free MCP connector for Claude to access Spacemail email
StageNot given Not given
FoundedNot given Not given
Based inUS GB
Pricing modelFreemium Open source
PricingFree: $0/mo with 200 credits/day and 500 free eval iterations. Pro: $24/mo (billed annually at $288/year) with 5,000 credits/mo. Team: $199/mo (billed annually at $2,388/year) with 50,000 credits/mo. Enterprise: Custom pricing. Additional credits: $10 per 1,000 credits (Pro), $9 per 1,000 credits (T Free
Key featuresNot given
  • Check new mail across all mailboxes with message previews
  • Search emails by sender, subject, words or date
  • Read full email messages with attachment names
  • Draft threaded replies and new emails saved to Drafts
  • Mark messages as read or unread and flag important ones
  • Archive, move or delete messages to Trash
  • Works with Claude Desktop, Claude Code, Cursor and Windsurf
  • Support for up to three mailboxes
  • Drafts saved for manual review before sending
  • Data stays on your computer, not collected by Norwich Website Design
What makes it different
  • Tests how external AI clients use your MCP server, not just how your code runs
  • Open source core runs locally or in your own CI, never sees live traffic
  • Evaluations score tool choice and goal completion across repeated runs, not brittle assertions
  • Automatically maintains current behavior of 16+ AI clients so your tests stay relevant
  • Framework and deployment agnostic: works with any MCP server however it was built
  • Free and open-source under MIT licence
  • Email content marked as untrusted to prevent phishing attacks
  • Deleted messages go to Trash, not permanently deleted
  • Independent project not affiliated with Spaceship or Spacemail
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)63 +1 (up) since last check44 −1 (down) since last check
Trust Flow (Majestic)200
Citation Flow (Majestic)424
Referring domains (Majestic)3993

5 details filled in for both companies.

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