Cybermail email provider statistics and deliverability context
← Email Stats homeesp
According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), Cybermail is the email service provider (ESP) for 210 domains — 0.03% of 637,420 SPF-publishing domains. Its strongest TLD is .co.jp (52.9% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-24 DNS snapshot.
What Cybermail represents in this dataset
CyberMail — Japanese email marketing system.
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 2026-09-24 snapshot shows about Cybermail
Across 6 distinct TLDs its top three are .co.jp (52.9%), .jp (21.9%), .com (14.3%) — together 89.0% of the 210 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, 148 domains, 70.5% of them), followed by Microsoft 365 (12.4%). 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 (2026-09-24); 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 Cybermail
What else the same 210 domains use — cross-tabulated from the same daily snapshot (2026-09-24).
| Type | Service | Domains | Share of Cybermail users |
|---|---|---|---|
| Mailbox | Unknown / Other | 148 | 70.5% |
| Mailbox | Microsoft 365 | 26 | 12.4% |
| Mailbox | Google Workspace | 19 | 9.0% |
| Mailbox | Self-Hosted | 6 | 2.9% |
| Mailbox | SecureMX (JP) | 4 | 1.9% |
| Mailbox | Proofpoint | 2 | 1.0% |
| ESP | Amazon SES | 31 | 14.8% |
| ESP | Repica WebCAS | 17 | 8.1% |
| ESP | BizMatrix | 17 | 8.1% |
| ESP | Q-Send | 15 | 7.1% |
TLD distribution (top 6 of 6)
Frequently asked questions
How many domains use Cybermail?
210 domains in the Tranco top-1M use Cybermail as their email service provider (ESP) as of September 24, 2026, according to Live Direct Marketing's daily DNS scan.
What is Cybermail's market share?
Cybermail holds 0.03% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-24). The number is recomputed every day.
What are the biggest alternatives to Cybermail?
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 2026-09-24).
Largest email service provider (ESP)s in this category
Amazon SES (6.23%) · SendGrid (Twilio) (4.68%) · Mailgun (4.01%) · Zendesk (3.77%) · Mailchimp (3.61%) · Mandrill (3.26%) · HubSpot (3.18%) · Salesforce (2.57%) · Mailjet (Sinch) (2.14%) · Cloudflare Email Routing (1.96%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 210 domains.