Cleanbox vs MXLayer: Email Security and Spam Filtering Compared
MXLayer and Cleanbox both sit between the internet and your inbox, filtering email before it reaches your mail server. Both act as an MX gateway. Both catch spam, phishing, and malware. On the surface, they look like competing products solving the same problem.
In practice, they are built for different audiences with different priorities. MXLayer is an enterprise email security gateway focused on compliance, archiving, and outbound filtering. Cleanbox is an email protection and management platform that combines inbound filtering with aliases, per-address controls, contact intelligence, and a consumer-friendly free tier.
This comparison covers everything: features, pricing, filtering capabilities, and who each product is actually built for.
Quick overview
| MXLayer | Cleanbox | |
|---|---|---|
| Type | Enterprise email security gateway | Email protection and management platform |
| Primary audience | Enterprise, MSPs | Individuals, small businesses, custom domain owners |
| Inbound filtering | Yes (all plans) | Yes (all plans via aliases; MX relay on Advanced+) |
| Outbound filtering | Yes | No (inbound-only) |
| Email aliases | No | Yes (core feature) |
| Free tier | No | Yes (3 aliases) |
| Cheapest paid plan | $75/month | $5/month |
| MX relay from | $75/month | $35/month |
What MXLayer offers
MXLayer is a cloud-based email security gateway. Your domain’s MX records point to MXLayer, which filters all inbound email before forwarding clean messages to your mail server. It also filters outbound email, scanning messages leaving your organization for spam, malware, and sensitive data.
Core capabilities include:
- Inbound email filtering: Multi-stage processing with IP reputation checks, SPF verification, content scanning, URL scanning, and attachment analysis
- Outbound email filtering: Scans outgoing email for malware, spam, and data leaks. Includes DKIM signing and sender reputation management
- Email archiving: 30 days included free on all plans. Paid add-ons for 1-year or 5-year retention for compliance requirements (HIPAA, SOX, GDPR)
- Data Leak Prevention (DLP): Rules to detect and block sensitive information leaving the organization via email
- Dynamic File Analysis (sandboxing): Enterprise plan only. Executes suspicious attachments in an isolated environment to detect zero-day malware
- DMARC reporting: Analyzes authentication results and generates DMARC compliance reports
- Brandable MSP interface: White-label admin panel for managed service providers reselling email security
MXLayer positions itself as an all-in-one email security solution for organizations that need compliance features and outbound control alongside inbound filtering.
What Cleanbox offers
Cleanbox is an email protection platform that combines inbound filtering with email management tools. Instead of focusing exclusively on gateway security, Cleanbox adds layers that give users control over how email reaches them and from whom.
Core capabilities include:
- Email aliases: Create unique forwarding addresses on @cleanbox.me or your own custom domain. Each alias forwards to your real inbox. Disable any alias instantly if it starts receiving spam. This is Cleanbox’s foundational feature — every incoming email passes through the filtering stack before delivery.
- Multi-layer spam filtering: Rspamd with hundreds of scoring rules, DNSBL checks against Spamhaus, Barracuda, and SpamCop, SPF/DKIM/DMARC verification, ClamAV virus scanning, and AI content classification
- Relay (MX gateway): Available on Advanced and Enterprise plans. Your domain’s MX records point to Cleanbox, which filters everything before forwarding to your mail server via SMTP
- Shield: Per-alias protection with rate limiting (cap emails per sender per day), Gatekeeper (whitelist-only mode), and Snoozer (deliver email only during chosen hours)
- Contact intelligence: Automatic sender categorization into 20 categories (Shopping, Finance, Social, Government, Health, and more) with 5 contact states (whitelisted, blocked, muted, prioritized, unset)
- Quarantine with explanations: Borderline messages are held with a detailed breakdown of every check that triggered, authentication results, and the
X-Cleanbox-Explanationheader explaining why - Filters: Custom rules with 10 condition types, regex support, ANY/ALL logic groups, testable against real messages
- Cloud storage: Automatic attachment extraction organized by sender contact
- Teams: Multi-user workspaces with granular per-feature permissions
Feature-by-feature comparison
This is the complete breakdown. Where a feature exists on both platforms, the differences in implementation are noted.
Inbound email filtering
| Capability | MXLayer | Cleanbox |
|---|---|---|
| MX gateway (relay) | All plans | Advanced and Enterprise |
| Alias-based filtering | No | All plans (every alias is filtered) |
| Spam scoring | Heuristic rules + ML | Rspamd (hundreds of rules) |
| DNSBL checks | Yes | Yes (Spamhaus, Barracuda, SpamCop) |
| SPF/DKIM/DMARC verification | Yes | Yes |
| Virus scanning | Multiple third-party engines | ClamAV |
| AI content classification | Machine learning | AI classifier (contextual analysis) |
| URL scanning | Yes (dedicated) | Via Rspamd URL reputation |
| Attachment sandboxing | Enterprise only ($350/mo) | No |
| Zero-hour attack protection | Yes | Via Rspamd + AI + reputation |
| Per-address spam thresholds | No | Yes (every alias independently) |
Both platforms filter inbound email effectively. MXLayer uses multiple third-party antivirus engines and offers dedicated sandboxing on its most expensive plan. Cleanbox uses Rspamd — the same open-source engine used by major email providers — combined with ClamAV and an AI classifier that analyzes email content contextually, catching sophisticated phishing and AI-generated spam that rule-based filters miss.
The key differentiator: Cleanbox lets you set a different spam threshold for every alias. A public-facing address can have aggressive filtering while a personal alias stays relaxed. MXLayer applies the same filtering to all addresses on the account.
Quarantine
| MXLayer | Cleanbox | |
|---|---|---|
| Quarantine available | Yes | Yes |
| Retention period | 7 days, then auto-deleted | Held until you take action |
| Explanation per message | Basic | Detailed (every rule, score, auth result) |
| X-Cleanbox-Explanation header | N/A | Yes (human-readable reason) |
| One-click release | Yes | Yes |
MXLayer’s quarantine holds messages for 7 days before deleting them. If you miss a quarantined email within that window, it is gone. Cleanbox holds quarantined messages indefinitely until you explicitly release or reject them — no legitimate email silently disappears because you were on vacation.
Cleanbox also provides a detailed explanation for every quarantined message: which specific rules triggered, what the spam score was, whether SPF/DKIM/DMARC passed or failed, and a human-readable X-Cleanbox-Explanation header summarizing why the message was flagged. This transparency helps you understand your filter and adjust your thresholds with confidence.
Email aliases and address management
| MXLayer | Cleanbox | |
|---|---|---|
| Email aliases | No | 3 (free) to unlimited (Enterprise) |
| Custom domain aliases | No | Premium+ (3 to 25 domains) |
| Per-alias controls | N/A | Spam threshold, Shield, enable/disable |
| Rate limiting per alias | No | Yes (Shield) |
| Sender approval per alias | No | Yes (Gatekeeper) |
| Delivery scheduling | No | Yes (Snoozer) |
This is the biggest architectural difference between the two platforms. MXLayer is a gateway — it filters email for addresses that already exist on your mail server. Cleanbox creates addresses. You generate a unique alias for every service, vendor, or contact, and each alias has its own controls.
If an alias starts receiving spam, you know exactly which service leaked it and can disable that alias without affecting any other address. With MXLayer, you rely entirely on filtering to manage spam to your existing addresses. With Cleanbox, you have both filtering and address compartmentalization.
Shield adds three layers of per-alias protection that have no equivalent in MXLayer: rate limiting caps how many emails a sender can deliver per day, Gatekeeper restricts delivery to approved senders only, and Snoozer queues email outside your chosen delivery hours.
Contact and sender management
| MXLayer | Cleanbox | |
|---|---|---|
| Allow/block lists | Yes (global) | Yes (per contact) |
| Automatic sender categorization | No | Yes (20 categories) |
| Contact states | No | 5 states (whitelist, block, mute, prioritize, unset) |
| Sender reputation tracking | IP/domain reputation | Per-sender reputation + crowd-sourced data |
MXLayer uses traditional allow/block lists. Cleanbox builds a contact database that automatically categorizes every sender into one of 20 categories (Shopping, Finance, Social, Government, Health, and more) and lets you assign granular states per contact. Muting a sender stops delivery without blocking; prioritizing a sender bypasses normal filtering. This level of per-sender control is designed for users who want to manage relationships, not just filter threats.
Outbound filtering and compliance
| MXLayer | Cleanbox | |
|---|---|---|
| Outbound email filtering | Yes | No |
| DLP (Data Leak Prevention) | Yes | No |
| Email archiving | 30 days free; 1-5 year add-on | No (Cloud Storage for attachments) |
| DMARC reporting | Yes | No |
| DKIM signing for outbound | Yes | No (inbound-only platform) |
| Compliance certifications | HIPAA, SOX, GDPR focus | GDPR-conscious |
This is where MXLayer is genuinely stronger. If your organization needs to scan outgoing email for sensitive data, archive messages for regulatory compliance, or generate DMARC aggregate reports, MXLayer offers these as core features. Cleanbox is an inbound-only platform and does not monitor, filter, or archive outbound email.
For organizations in regulated industries (healthcare, finance, legal) where email archiving is a legal requirement, MXLayer’s compliance features are a real advantage. For organizations that primarily need inbound protection and do not have archiving mandates, these features are overhead you are paying for but not using.
Administration and reporting
| MXLayer | Cleanbox | |
|---|---|---|
| Admin dashboard | Yes (brandable for MSPs) | Yes |
| Log retention | 14 days | Full history |
| Threat statistics | 7 days (Essentials/Pro), 30 days (Enterprise) | Full history |
| Team management | Basic admin roles | Granular per-feature permissions |
| MSP/white-label | Yes | No |
| Custom filters/rules | Allow/block + content rules | 10 condition types, regex, ANY/ALL logic |
MXLayer’s admin interface is built for managed service providers who resell email security to their clients, with brandable dashboards and multi-tenant management. Cleanbox is built for direct users and teams, with a focus on individual control rather than MSP delegation.
MXLayer’s log and statistics retention is notably short: 14 days for logs, 7 days for threat statistics on most plans. Cleanbox retains full history, which means you can review filtering patterns and trends over months, not just the past two weeks.
Pricing comparison
This is where the difference is stark.
| Cleanbox plan | Monthly | Yearly | MXLayer equivalent | Monthly | Yearly |
|---|---|---|---|---|---|
| Free | $0 | $0 | None | — | — |
| Personal | $5 | $42 | None | — | — |
| Premium | $15 | $126 | None | — | — |
| Advanced (with Relay) | $35 | $294 | Essentials | $75 | $750 |
| Enterprise | $100 | $840 | Business Pro | $200 | $2,000 |
| — | — | — | Enterprise | $350 | $3,500 |
Cleanbox Advanced ($35/month) includes MX relay, 100 aliases, 10 custom domains, Shield, contact management, quarantine, and 50GB cloud storage. MXLayer Essentials ($75/month) includes inbound/outbound filtering, 100 accounts, and 30-day archiving — but no aliases, no per-address controls, no Shield, and 7-day quarantine retention.
At the enterprise level, Cleanbox Enterprise ($100/month) offers unlimited aliases, 25 domains, 200GB storage, and all features. MXLayer Enterprise ($350/month) adds sandboxing and 30-day threat statistics, but costs 3.5 times more.
MXLayer also charges per additional accounts: $7.50 to $35 per 10 accounts per month depending on the plan. Cleanbox’s pricing is flat — no per-user fees, no account-based scaling.
Where MXLayer is the better choice
MXLayer is worth considering if:
- You need outbound email filtering. If your organization needs to scan outgoing email for malware, data leaks, or policy violations, MXLayer handles both directions. Cleanbox is inbound-only.
- Compliance requires email archiving. Regulated industries (healthcare, finance, legal) that must retain email for 1-5 years need archiving as a core feature. MXLayer includes 30-day archiving free and offers long-term retention as an add-on.
- You are an MSP reselling email security. MXLayer’s brandable, multi-tenant admin interface is built for managed service providers. Cleanbox does not offer white-label or MSP features.
- You need attachment sandboxing. MXLayer’s Enterprise plan includes dynamic file analysis that executes suspicious attachments in an isolated environment. This is a genuine security advantage for organizations targeted by zero-day malware.
- You need DMARC reporting. MXLayer generates DMARC aggregate reports from your email traffic. Cleanbox verifies DMARC on incoming email but does not generate reporting dashboards.
Where Cleanbox is the better choice
Cleanbox is the stronger option if:
- You want email aliases. Cleanbox’s alias system lets you create unique addresses for every service, vendor, and contact — with independent spam thresholds and protection settings per alias. MXLayer has no alias functionality. This alone is a fundamental difference in how you manage your email exposure.
- Price matters. Cleanbox’s MX relay starts at $35/month (less than half MXLayer’s $75/month entry point). Cleanbox Enterprise is $100/month versus MXLayer’s $350/month. There is no per-user fee. For small businesses and individual domain owners, this is a significant difference.
- You want per-address control. Different addresses face different threats. A public support address needs stricter filtering than a personal address shared with family. Cleanbox lets you configure each alias independently. MXLayer applies the same settings globally.
- You want meaningful quarantine. Cleanbox holds quarantined messages until you act on them (no 7-day auto-deletion) and provides detailed explanations for every flagged message. When a legitimate email is caught, you know exactly why and can adjust your threshold.
- You want Shield protection. Rate limiting, sender approval (Gatekeeper), and delivery scheduling (Snoozer) are unique to Cleanbox. No equivalent exists in MXLayer.
- You want contact management. Automatic categorization, per-sender states, and crowd-sourced reputation data give you control over sender relationships that goes beyond allow/block lists.
- You want to start free. Cleanbox’s free tier (3 aliases with full filtering) lets you evaluate the platform before committing. MXLayer has no free tier and charges $100 for onboarding assistance (waived with annual purchase).
The verdict
MXLayer and Cleanbox solve overlapping but different problems. MXLayer is an enterprise security gateway built for organizations that need compliance features, outbound filtering, and MSP management. It does those things well, and if those are your requirements, it is a solid choice.
Cleanbox is a broader platform that combines inbound filtering with tools that change how you interact with email: aliases that compartmentalize your exposure, Shield that controls who can reach you and when, contacts that build sender intelligence over time, and quarantine that explains itself. It costs significantly less than MXLayer while offering capabilities that MXLayer does not have at any price point.
For most custom domain owners, small businesses, and privacy-conscious users, Cleanbox provides more protection and more control at a lower price. The aliases alone — the ability to create, configure, and disable addresses independently — represent a fundamentally different approach to email security that a pure gateway like MXLayer cannot replicate.
For enterprise organizations with regulatory archiving requirements, outbound DLP needs, or MSP management workflows, MXLayer’s compliance focus may justify the higher price.
For more comparisons, see Cleanbox vs DuckDuckGo Email Protection, Cleanbox vs Forward Email, and Best Spam Protection for Custom Domains.
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