UC Worker shared email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 18, 2026), UC Worker shared is the mailbox provider for 37 domains — 0.01% of 675,783 domains with MX records. Its strongest TLD is .th (97.3% of its domains). Detection: primary MX record (lowest preference).
Last updated from the 2026-09-18 DNS snapshot.
What UC Worker shared represents in this dataset
Shared MX cluster behind Cloudflare (uc-workd.com).
Directory category: Hosting. 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 2026-09-18 snapshot shows about UC Worker shared
Across 2 distinct TLDs its top three are .th (97.3%), .co.th (2.7%) — together 100.0% of the 37 domains, which makes the footprint narrow — three TLDs cover most of it, which is typical of a regional or single-market operator. 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 (2026-09-18); 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.
TLD distribution (top 2 of 2)
Frequently asked questions
How many domains use UC Worker shared?
37 domains in the Tranco top-1M use UC Worker shared as their mailbox provider as of September 18, 2026, according to Live Direct Marketing's daily DNS scan.
What is UC Worker shared's market share?
UC Worker shared holds 0.01% of domains with MX records in the Tranco top-1M (snapshot of 2026-09-18). The number is recomputed every day.
What are the biggest alternatives to UC Worker shared?
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 2026-09-18).
Largest mailbox providers in this category
Self-Hosted (22.49%) · Google Workspace (21.62%) · Microsoft 365 (17.01%) · Unknown / Other (6.67%) · Generic / unmatched (mx*.*) (2.54%) · Generic / unmatched (mail.*) (1.94%) · Proofpoint (1.86%) · Cloudflare Email Routing (1.75%) · Yandex 360 (1.63%) · Mimecast (1.46%)
Domain sample (top 37 by Tranco rank)
Showing 37 of 37 domains.