Treasure Ship email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 14, 2026), Treasure Ship is the email service provider (ESP) for 135 domains — 0.02% of 637,677 SPF-publishing domains. Its strongest TLD is .jp (40.7% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-14 DNS snapshot.
What Treasure Ship represents in this dataset
Treasure Ship — Japanese email marketing service.
Directory category: Esp. The classification comes from include: mechanisms in the SPF record. 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 Treasure Ship
Across 6 distinct TLDs its top three are .jp (40.7%), .com (28.1%), .co.jp (25.9%) — together 94.8% of the 135 domains, which makes the footprint narrow — three TLDs cover most of it, which is typical of a regional or single-market operator. The service most often observed on the same domains is Unknown / Other (Mailbox, 46 domains, 34.1% of them), followed by Microsoft 365 (20.0%). Directly comparable by the same detection rule: Amazon SES, SendGrid (Twilio), Mailgun. 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 include: mechanisms in the SPF record rule, which is an infrastructure fact, not a commercial relationship.
Commonly used together with Treasure Ship
What else the same 135 domains use — cross-tabulated from the same daily snapshot (2026-09-14).
| Type | Service | Domains | Share of Treasure Ship users |
|---|---|---|---|
| Mailbox | Unknown / Other | 46 | 34.1% |
| Mailbox | Microsoft 365 | 27 | 20.0% |
| Mailbox | Google Workspace | 20 | 14.8% |
| Mailbox | Self-Hosted | 20 | 14.8% |
| Mailbox | Kagoya (JP) | 3 | 2.2% |
| Mailbox | Trend Micro | 2 | 1.5% |
| ESP | Amazon SES | 45 | 33.3% |
| ESP | BizMatrix | 12 | 8.9% |
| ESP | Repica WebCAS | 10 | 7.4% |
| ESP | Q-Send | 7 | 5.2% |
TLD distribution (top 6 of 6)
Frequently asked questions
How many domains use Treasure Ship?
135 domains in the Tranco top-1M use Treasure Ship as their email service provider (ESP) as of September 14, 2026, according to Live Direct Marketing's daily DNS scan.
What is Treasure Ship's market share?
Treasure Ship holds 0.02% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-14). The number is recomputed every day.
What are the biggest alternatives to Treasure Ship?
The largest email service provider (ESP)s in the same category by Tranco top-1M share are: Amazon SES, SendGrid (Twilio), Mailgun, Zendesk, Mailchimp (as of 2026-09-14).
Largest email service provider (ESP)s in this category
Amazon SES (6.16%) · SendGrid (Twilio) (4.62%) · Mailgun (4.00%) · Zendesk (3.75%) · Mailchimp (3.57%) · Mandrill (3.24%) · HubSpot (3.11%) · Salesforce (2.54%) · Mailjet (Sinch) (2.12%) · Cloudflare Email Routing (1.95%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 135 domains.