Free network diagnostic tools for DNS, IP, email and SSL checks
Free MCP connector for Claude to access Spacemail email
Stage
Not given
Not given
Founded
Not given
Not given
Based in
IN
GB
Pricing model
Freemium
Open source
Pricing
Free plan: All 41 tools with unlimited checks, 3 saved domains with daily monitoring, 7 days of history. Pro plan: $29/month for 50 domains, scans every 6 hours, email, Slack, Telegram and webhook alerts, 12 months of history and API access.
Free
Key features
DNS Lookup - resolve A, AAAA, MX, TXT, NS, CNAME records
Blacklist Checker - query 7 major DNS blocklists
SSL/TLS Certificate Checker - verify certificate chain, expiry and protocol support
Email Deliverability - check SPF, DKIM and DMARC records
WHOIS Lookup - query domain registration details
Reverse DNS (PTR) - check IP to hostname resolution
Port Checker - test common HTTP/HTTPS ports
BIMI Lookup - query BIMI TXT records
Domain monitoring with automated scans
Multi-channel alerts via email, Slack, Telegram and webhooks
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
41 tools all available free with unlimited checks
Clear sourcing - every result shows its source and what was not tested
Live DNS queries from edge servers via DNS-over-HTTPS
Domain monitoring and alerts with affordable Pro plan at $29/month
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
The Network Tools
Spacemail for Claude