mailbox
According to Live Direct Marketing's daily Tranco top-1M scan (July 26, 2026), Amazon WorkMail is the mailbox provider for 4,670 domains — 0.70% of 667,887 domains with MX records. Over the last 30 days its share declined by 0.01 pp. Its strongest TLD is .com (46.5% of its domains). Detection: primary MX record (lowest preference).
Last updated from the 2026-07-26 DNS snapshot.
Amazon corporate mail (Exchange-compatible).
Directory category: Mailbox. 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 277 distinct TLDs its top three are .com (46.5%), .net (6.8%), .jp (5.8%) — together 59.0% of the 4,670 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, 2,189 domains, 46.9% of them), followed by Zendesk (3.0%). Its share of domains with MX records moved -0.01 pp in 30 days — inside the daily noise of list rotation. 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 (2026-07-26); 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 4,670 domains use — cross-tabulated from the same daily snapshot (2026-07-26).
| Type | Service | Domains | Share of Amazon WorkMail users |
|---|---|---|---|
| ESP | Amazon SES | 2,189 | 46.9% |
| ESP | Zendesk | 138 | 3.0% |
| ESP | SendGrid (Twilio) | 134 | 2.9% |
| ESP | Mailgun | 88 | 1.9% |
| ESP | Mailchimp | 70 | 1.5% |
| ESP | Mandrill | 66 | 1.4% |
| ESP | Salesforce | 55 | 1.2% |
| ESP | Mailjet (Sinch) | 43 | 0.9% |
| ESP | HubSpot | 40 | 0.9% |
| ESP | Brevo (ex-Sendinblue) | 32 | 0.7% |
4,670 domains in the Tranco top-1M use Amazon WorkMail as their mailbox provider as of July 26, 2026, according to Live Direct Marketing's daily DNS scan.
Amazon WorkMail holds 0.70% of domains with MX records in the Tranco top-1M (snapshot of 2026-07-26). The number is recomputed every day.
Amazon WorkMail's share declined by 0.01 percentage points over the last 30 days (as of July 26, 2026).
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 2026-07-26).
Self-Hosted (22.75%) · Google Workspace (21.84%) · Microsoft 365 (16.92%) · Unknown / Other (6.80%) · Generic / unmatched (mx*.*) (2.54%) · Proofpoint (1.92%) · Generic / unmatched (mail.*) (1.77%) · Yandex 360 (1.68%) · Cloudflare Email Routing (1.63%) · Mimecast (1.53%)
Showing 100 of 4,670 domains.