mailbox
According to Live Direct Marketing's daily Tranco top-1M scan (July 30, 2026), Generic / unmatched (mx*.*) is the mailbox provider for 17,003 domains — 2.55% of 667,152 domains with MX records. Over the last 30 days its share declined by 0.20 pp, and -6.42 pp year-over-year. Its strongest TLD is .com (30.0% of its domains). Detection: primary MX record (lowest preference).
Last updated from the 2026-07-30 DNS snapshot.
Hosts named "mx*.<apex>" not matching a known operator. Likely self-hosted or niche provider.
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.
Across 365 distinct TLDs its top three are .com (30.0%), .de (6.9%), .net (6.5%) — together 43.4% of the 17,003 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, 402 domains, 2.4% of them), followed by SendGrid (Twilio) (1.9%). Its share of domains with MX records moved -0.20 pp in 30 days, a change larger than list churn alone explains. Year-over-year the share is -6.42 pp, so the 30-day move is consistent with 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 (2026-07-30); 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.
What else the same 17,003 domains use — cross-tabulated from the same daily snapshot (2026-07-30).
| Type | Service | Domains | Share of Generic / unmatched (mx*.*) users |
|---|---|---|---|
| ESP | Amazon SES | 402 | 2.4% |
| ESP | SendGrid (Twilio) | 329 | 1.9% |
| ESP | Mailchimp | 315 | 1.9% |
| ESP | Mailgun | 296 | 1.7% |
| ESP | Netcore Cloud (Pepipost) | 293 | 1.7% |
| ESP | Mailjet (Sinch) | 255 | 1.5% |
| ESP | Mandrill | 254 | 1.5% |
| ESP | Zendesk | 231 | 1.4% |
| ESP | Brevo (ex-Sendinblue) | 183 | 1.1% |
| ESP | Unisender (RU) | 151 | 0.9% |
17,003 domains in the Tranco top-1M use Generic / unmatched (mx*.*) as their mailbox provider as of July 30, 2026, according to Live Direct Marketing's daily DNS scan.
Generic / unmatched (mx*.*) holds 2.55% of domains with MX records in the Tranco top-1M (snapshot of 2026-07-30). The number is recomputed every day.
Generic / unmatched (mx*.*)'s share declined by 0.20 percentage points over the last 30 days (as of July 30, 2026).
The largest mailbox providers in the same category by Tranco top-1M share are: Self-Hosted, Google Workspace, Microsoft 365, Unknown / Other, Proofpoint (as of 2026-07-30).
Self-Hosted (22.74%) · Google Workspace (21.79%) · Microsoft 365 (16.94%) · Unknown / Other (6.79%) · Proofpoint (1.93%) · Generic / unmatched (mail.*) (1.77%) · Yandex 360 (1.68%) · Cloudflare Email Routing (1.65%) · Mimecast (1.54%) · Hostinger (1.13%)
Showing 100 of 17,003 domains.