Generic / unmatched (mail.*) email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 14, 2026), Generic / unmatched (mail.*) is the mailbox provider for 13,117 domains — 1.94% of 674,487 domains with MX records. Over the last 30 days its share grew by 0.16 pp, and -11.07 pp year-over-year. Its strongest TLD is .com (28.1% of its domains). Detection: primary MX record (lowest preference).
Last updated from the 2026-09-14 DNS snapshot.
What Generic / unmatched (mail.*) represents in this dataset
Hosts named "mail.<apex>" not matching a known operator pattern. Mostly self-hosted long tail.
Directory category: Generic. The classification comes from primary MX record (lowest preference). It describes observed DNS infrastructure, not a commercial relationship and not the placement of any individual message.
What the 2026-09-14 snapshot shows about Generic / unmatched (mail.*)
Across 387 distinct TLDs its top three are .com (28.1%), .cfd (7.6%), .de (7.2%) — together 42.9% of the 13,117 domains, which makes the footprint moderately concentrated, with a recognisable home market. The service most often observed on the same domains is Amazon SES (ESP, 437 domains, 3.3% of them), followed by Mandrill (1.5%). Its share of domains with MX records moved +0.16 pp in 30 days, a change larger than list churn alone explains. Year-over-year the share is -11.07 pp, so the 30-day move is against the longer trend. Directly comparable by the same detection rule: Self-Hosted, Google Workspace, Microsoft 365. Ranking between them reflects what is published in DNS, not delivery quality or volume sent. All figures come from a single daily DNS snapshot (2026-09-14); a domain appears here when its published records match the primary MX record (lowest preference) rule, which is an infrastructure fact, not a commercial relationship.
Commonly used together with Generic / unmatched (mail.*)
What else the same 13,117 domains use — cross-tabulated from the same daily snapshot (2026-09-14).
| Type | Service | Domains | Share of Generic / unmatched (mail.*) users |
|---|---|---|---|
| ESP | Amazon SES | 437 | 3.3% |
| ESP | Mandrill | 199 | 1.5% |
| ESP | Mailjet (Sinch) | 175 | 1.3% |
| ESP | Zendesk | 167 | 1.3% |
| ESP | Mailgun | 153 | 1.2% |
| ESP | SendGrid (Twilio) | 150 | 1.1% |
| ESP | Mailchimp | 125 | 1.0% |
| ESP | Brevo (ex-Sendinblue) | 99 | 0.8% |
| ESP | MailerLite | 77 | 0.6% |
| ESP | Unisender (RU) | 70 | 0.5% |
TLD distribution (top 30 of 387)
Frequently asked questions
How many domains use Generic / unmatched (mail.*)?
13,117 domains in the Tranco top-1M use Generic / unmatched (mail.*) as their mailbox provider as of September 14, 2026, according to Live Direct Marketing's daily DNS scan.
What is Generic / unmatched (mail.*)'s market share?
Generic / unmatched (mail.*) holds 1.94% of domains with MX records in the Tranco top-1M (snapshot of 2026-09-14). The number is recomputed every day.
Is Generic / unmatched (mail.*) growing or declining?
Generic / unmatched (mail.*)'s share grew by 0.16 percentage points over the last 30 days (as of September 14, 2026).
What are the biggest alternatives to Generic / unmatched (mail.*)?
The largest mailbox providers in the same category by Tranco top-1M share are: Self-Hosted, Google Workspace, Microsoft 365, Unknown / Other, Generic / unmatched (mx*.*) (as of 2026-09-14).
Largest mailbox providers in this category
Self-Hosted (22.46%) · Google Workspace (21.60%) · Microsoft 365 (16.95%) · Unknown / Other (6.60%) · Generic / unmatched (mx*.*) (2.54%) · Proofpoint (1.86%) · Cloudflare Email Routing (1.76%) · Yandex 360 (1.62%) · Mimecast (1.46%) · Hostinger (1.26%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 13,117 domains.