SpamExperts mailbox provider

According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), SpamExperts is the mailbox provider for 666 domains — 0.10% of 658,711 domains with MX records. Detection method: primary MX record (lowest preference).

Key facts

SpamExperts is a mail-handling service operating as the primary mail server (MX record) for numerous domains in the Tranco top-1M website index. It provides email filtering and infrastructure to customer organisations and independent websites.

The deployment pattern shows SpamExperts concentrated in the mid-market and smaller-site segments globally, with a US skew, across numerous TLDs (predominantly .com). For email senders, this distributed footprint means SpamExperts filtering policies warrant specific testing outside the standard ISP benchmarks; for mail admins and recipients, it represents a consistent infrastructure provider worth understanding for reliable mail delivery.

Where SpamExperts sits in the Tranco ranking

Tranco rank bandDomainsShare of its base
Top 1,00000.0%
Top 10,00030.5%
Top 100,0007210.8%
Top 1,000,00051677.5%
Unranked7511.3%

Top-level domain split

TLDDomainsShare
.com22934.4%
.nl649.6%
.net578.6%
.ro314.7%
.de243.6%
.gr203.0%
.com.br192.9%
.org152.3%
.es132.0%
.in121.8%

What SpamExperts users also use

Cross-tabulated from the same daily snapshot — the other email services seen on the same 666 domains.

TypeServiceDomainsShare of SpamExperts users
ESPSpamExperts (AntiSpamCloud)18227.3%
ESPSendGrid (Twilio)385.7%
ESPMailchimp324.8%
ESPAmazon SES314.7%
ESPMailgun274.1%
ESPMailChannels223.3%
ESPZendesk203.0%
ESPMandrill152.3%
ESPCampaign Monitor121.8%
ESPMailjet (Sinch)121.8%

Long-tail infrastructure and testing considerations

SpamExperts operates the primary mail infrastructure for a distributed set of smaller and mid-market independent domains across the globe. This placement outside the mainstream ISP matrix means it escapes standard deliverability testing, yet remains essential to understand for senders and admins serving these segments, whose filtering policies and infrastructure differ from major consolidated providers.

See the full SpamExperts data page (KPI cards, trend, sample domains) →

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Frequently asked questions

Do I need to test email deliverability for SpamExperts domains?

Yes, if your sender or recipient base includes mid-market or independent websites. SpamExperts operates the mail infrastructure for many such domains globally, and its filtering policies differ from major mailbox providers, warranting separate testing to ensure reliable delivery.

How many domains use SpamExperts?

666 domains in the Tranco top-1M use SpamExperts as their mailbox provider as of July 13, 2026 (0.10% of domains with MX records), according to Live Direct Marketing's daily DNS scan.

Is SpamExperts common enough to affect email deliverability testing?

SpamExperts accounts for 0.10% 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 SpamExperts most?

SpamExperts's largest TLD is .com (34.4% of its domains); it appears across 72 TLDs in total.

Other mailbox providers

Self-Hosted (22.44%)Google Workspace (21.79%)Microsoft 365 (16.74%)Unknown / Other (7.54%)Generic / unmatched (mx*.*) (2.57%)Proofpoint (1.90%)Generic / unmatched (mail.*) (1.75%)Yandex 360 (1.64%)Cloudflare Email Routing (1.60%)Mimecast (1.52%)