ZXCS (NL gateway) mailbox provider
According to Live Direct Marketing's daily Tranco top-1M scan (September 11, 2026), ZXCS (NL gateway) is the mailbox provider for 61 domains — 0.01% of 666,213 domains with MX records. Detection method: primary MX record (lowest preference).
Key facts
- 61 domains in the Tranco top-1M use ZXCS (NL gateway) (0.01% of domains with MX records).
- Snapshot date: 2026-09-11 — recomputed every day.
- Strongest TLD: .nl (45.9% of its domains).
- Region skew: Netherlands.
- Most co-used service: ZXCS (NL gateway).
- Directory category: email security gateway.
Why ZXCS (NL gateway) appears in this category
Dutch Stichting DIGI NL spam filter (filter-out.zxcs.nl).
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.
ZXCS (NL gateway) is a mail gateway service that functions as the primary receiving endpoint for email to a collection of smaller domains, predominantly in the Netherlands. It is identified through its presence as the authoritative MX record for these sites.
Its footprint in the long tail of regional email infrastructure means that senders targeting Dutch or northern European recipients may encounter ZXCS as a receiving gateway, even if the provider remains unfamiliar compared to global commercial mailbox platforms. For deliverability professionals, ZXCS represents the category of smaller regional operators whose reputation handling and filtering policies can differ materially from larger cloud providers.
Where ZXCS (NL gateway) sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 1 | 1.6% |
| Top 100,000 | 0 | 0.0% |
| Top 1,000,000 | 59 | 96.7% |
| Unranked | 1 | 1.6% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .nl | 28 | 45.9% | |
| .com | 13 | 21.3% | |
| .be | 5 | 8.2% | |
| .eu | 3 | 4.9% | |
| .org | 2 | 3.3% | |
| .info | 2 | 3.3% | |
| .net | 2 | 3.3% | |
| .de | 2 | 3.3% | |
| .co | 1 | 1.6% | |
| .mx | 1 | 1.6% |
What ZXCS (NL gateway) users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 61 domains.
| Type | Service | Domains | Share of ZXCS (NL gateway) users |
|---|---|---|---|
| ESP | ZXCS (NL gateway) | 54 | 88.5% |
| ESP | Mailgun | 4 | 6.6% |
| ESP | Mandrill | 1 | 1.6% |
| ESP | HubSpot | 1 | 1.6% |
| ESP | Zendesk | 1 | 1.6% |
| ESP | SpamExperts (AntiSpamCloud) | 1 | 1.6% |
| ESP | Mailchimp | 1 | 1.6% |
| ESP | Zoho Campaigns | 1 | 1.6% |
Regional gateway positioning and sender coverage
As a long-tail mailbox provider concentrated in the Netherlands, ZXCS occupies a segment of email infrastructure that is often underrepresented in sender testing strategies that focus on major platforms. Senders who validate delivery exclusively against large commercial providers may not catch issues—such as authentication policy sensitivity or regional reputation weighting—that emerge when email reaches smaller regional gateways like ZXCS. Comprehensive sender validation should account for providers beyond the dominant global players, particularly when targeting specific geographic markets.
See the full ZXCS (NL gateway) data page (KPI cards, trend, sample domains) →
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Frequently asked questions
What is ZXCS (NL gateway)?
ZXCS (NL gateway) is a mail gateway service that receives email for a long-tail of smaller domains concentrated in the Netherlands. It is identified by its role as the primary MX record for these sites and represents the class of smaller regional email infrastructure that sits outside the major commercial mailbox platforms.
How many domains use ZXCS (NL gateway)?
61 domains in the Tranco top-1M use ZXCS (NL gateway) as their mailbox provider as of September 11, 2026 (0.01% of domains with MX records), according to Live Direct Marketing's daily DNS scan.
Is ZXCS (NL gateway) common enough to affect email deliverability testing?
ZXCS (NL gateway) accounts for 0.01% 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 ZXCS (NL gateway) most?
ZXCS (NL gateway)'s largest TLD is .nl (45.9% of its domains); it appears across 12 TLDs in total.