Clean MX mailbox provider
According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), Clean MX is the mailbox provider for 108 domains — 0.02% of 675,489 domains with MX records. Detection method: primary MX record (lowest preference).
Key facts
- 108 domains in the Tranco top-1M use Clean MX (0.02% of domains with MX records).
- Snapshot date: 2026-09-24 — recomputed every day.
- Strongest TLD: .pt (48.1% of its domains).
- Region skew: Portugal.
- Most co-used service: Clean MX.
- Directory category: email security gateway.
Why Clean MX appears in this category
Portuguese managed inbound email filtering and security gateway.
We classify it as a email security gateway from primary MX record (lowest preference) matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
What the data shows
97.2% of its domains sit outside the top 100,000 — a long-tail footprint spread across smaller sites. Its single largest TLD is .pt at 48.1% of its domains — a strong geographic concentration across 8 TLDs overall. The service most often seen alongside it is Clean MX (ESP), on 91.7% of its domains.
Where Clean MX sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 2 | 1.9% |
| Top 1,000,000 | 105 | 97.2% |
| Unranked | 1 | 0.9% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .pt | 52 | 48.1% | |
| .com | 39 | 36.1% | |
| .net | 7 | 6.5% | |
| .org | 4 | 3.7% | |
| .ao | 3 | 2.8% | |
| .eu | 1 | 0.9% | |
| .es | 1 | 0.9% | |
| .io | 1 | 0.9% |
What Clean MX users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 108 domains.
| Type | Service | Domains | Share of Clean MX users |
|---|---|---|---|
| ESP | Clean MX | 99 | 91.7% |
| ESP | KMITD (TH) | 8 | 7.4% |
| ESP | Mailgun | 5 | 4.6% |
| ESP | Mailjet (Sinch) | 4 | 3.7% |
| ESP | Mailchimp | 3 | 2.8% |
| ESP | Elastic Email | 2 | 1.9% |
| ESP | Brevo (ex-Sendinblue) | 2 | 1.9% |
| ESP | SendPulse | 2 | 1.9% |
| ESP | Zoho Campaigns | 1 | 0.9% |
| ESP | Postmark | 1 | 0.9% |
See the full Clean MX data page (KPI cards, trend, sample domains) →
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Frequently asked questions
How many domains use Clean MX?
108 domains in the Tranco top-1M use Clean MX as their mailbox provider as of September 24, 2026 (0.02% of domains with MX records), according to Live Direct Marketing's daily DNS scan.
Is Clean MX common enough to affect email deliverability testing?
Clean MX accounts for 0.02% of domains with MX records in the top 1M. Whether you should seed a test mailbox there depends on how much of your audience it represents — the co-usage table above shows the services it appears alongside most.
Which countries or TLDs use Clean MX most?
Clean MX's largest TLD is .pt (48.1% of its domains); it appears across 8 TLDs in total.