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Protect your real inbox, not just aliases.

Point your domain's MX records to Cleanbox and we filter spam, blacklisted senders, and threats before messages reach your mail server.

Start protecting your domain
Inbound email
Cleanbox filters
Your mailbox

IP blacklist verification

Every sender's IP is checked against leading DNSBL providers like Spamhaus, Barracuda, and SpamCop — before the message even reaches your server.

  • Real-time DNSBL lookups
  • Multiple provider aggregation
  • Automatic threat rejection
IP blacklist verification

Per-address spam threshold

Set a custom spam score limit for each protected address. Aggressive for your public inbox, relaxed for internal — you control the sensitivity.

  • Granular per-address control
  • Detailed spam score reports
  • Adjustable at any time
Spam threshold configuration

Zero outbound changes

Your SPF, DKIM, and DMARC records stay untouched. We only filter inbound mail — your sending reputation remains 100% yours.

  • No changes to your outbound DNS
  • Your sending reputation stays clean
  • Setup in under 5 minutes
Zero outbound changes

Protect your domain in 5 minutes

Just update your MX records and Cleanbox takes care of the rest. Available on Premium+ and Business plans.

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