Features
MxGuard ships with everything needed to run production email security — no extra modules, no add-on pricing. From customer self-service to threat intelligence feeds.
Recognises bulk-mailer envelopes structurally. No false positives on Mailchimp, Shopify, or other legitimate bulk senders.
Different sensitivity per domain or per user. Strict on accounts, lenient on marketing aliases.
Optionally deliver borderline mail with [SPAM] prefix instead of quarantining.
Recipient, domain, or global scope. Exact, wildcard, or CIDR matching. Hit tracking and last-hit timestamps.
Customers add their own domains, verify by DNS TXT record, and point MX. No support tickets needed.
Optional probe to backend mail server. Reject unknown addresses at SMTP time, not after delivery.
Preserves DKIM, SPF, and DMARC chain through forwarding. Compatible with mailing lists and aliases.
Native /metrics endpoint. Per-domain verdict counters. Plug into Grafana or Datadog.
Mailing-list detection (📬) with one-click unsubscribe links in the digest. RFC 8058 supported.
Every action recorded — releases, deletes, label changes, rule edits. Searchable, exportable.
Built-in feature requests and bug reports. Track what's coming, vote on what matters.
Quarantined mail auto-deleted after 30 days by default. Configurable per deployment.
RFC 2047 encoded-word headers decoded to readable text including emoji and non-Latin scripts.
Rolling 7-day spam/ham ratios per sender domain, kept in Redis for fast lookup.
Mark a sender as ham once; future mail from the registrable domain gets a score discount for 30 days.
Full dashboard works on phone and tablet. Daily digest emails optimised for mobile inbox.
All processing and storage in the UK. GDPR-aligned by design.
No hardware to deploy, no software to install. Set up via DNS in minutes.
Comparison
A modern alternative to legacy stacks and overpriced enterprise suites.
| Feature | MxGuard | eFa / SpamAssassin | Enterprise suites |
|---|---|---|---|
| ML-based scoring | ✓ | — | ✓ |
| Sub-5ms per message | ✓ | — | — |
| Transparent score breakdown | ✓ | — | — |
| Customer self-service | ✓ | — | ✓ |
| Live feed dashboard | ✓ | — | — |
| UK-hosted & supported | ✓ | Depends | — |
| No capital investment | ✓ | — | Sometimes |
| SMB-friendly pricing | ✓ | ✓ | — |