Cybermail email provider statistics and deliverability context

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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.

210domains
0.03%of SPF-publishing domains
6distinct TLDs
2026-09-24snapshot (updated daily)

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).

TypeServiceDomainsShare of Cybermail users
MailboxUnknown / Other14870.5%
MailboxMicrosoft 3652612.4%
MailboxGoogle Workspace199.0%
MailboxSelf-Hosted62.9%
MailboxSecureMX (JP)41.9%
MailboxProofpoint21.0%
ESPAmazon SES3114.8%
ESPRepica WebCAS178.1%
ESPBizMatrix178.1%
ESPQ-Send157.1%

TLD distribution (top 6 of 6)

co.jp — 111 (52.9%)
jp — 46 (21.9%)
com — 30 (14.3%)
or.jp — 18 (8.6%)
ne.jp — 3 (1.4%)
ac.jp — 2 (1.0%)

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%)

ESP / mailing services portfolio → · Full daily report →

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Domain sample (top 100 by Tranco rank)

tbs.co.jpnankankeiba.combaby-calendar.jptokyo-np.co.jpsupersports.comsbtjapan.comnetbk.co.jploft.co.jpable.co.jpcustoms.go.jpichibanya.co.jpgakken.co.jpj-bus.co.jpaizawa.co.jpyutori.co.jpe-harp.jpspat4pp.jpf-aspit.commcdcrew.jpteikei.ne.jptelemarker.co.jparukikata.co.jpfukuoka-fg.comleben-style.jpyamada-denki.jptownhousing.co.jptakii.co.jphifido.co.jpcozycorner.co.jpmorecon.jphaba.co.jpcybermail.jptokyoeki-1bangai.co.jpstarnet.ad.jp8190.co.jpzoom.co.jpnibiohn.go.jptohoku-frontier.co.jppasela.co.jpjac-recruitment.jpnailtat.comhikkoshi-sakai.co.jpasahi-net.jpnibn.go.jpjicc.co.jpkisoji.co.jpbluenote.co.jpsaraya.comodakyu-dept.co.jpnetforest.ad.jpwinknet.ne.jpdhw.co.jpmurauchi.comsbisonpo.co.jpsawai.co.jpjamas.or.jpsecioss.comfansclub.jpminimini.jpdaishodai.ac.jpaiphone.co.jpkamaboko.comtohknet.co.jpbarneys.co.jpjmam.co.jp77bank.co.jptsuruha.co.jpiyotetsu.co.jpuacj.co.jpmiratap.co.jpmirai.co.jpgco.co.jppressance.co.jptsukubabank.co.jpmtg.gr.jpcottonclubjapan.co.jpyamabiko-corp.co.jpbell24.co.jptoclas.co.jpshaddy.jpgas.or.jpartnature.co.jpshigagin.comgolfpartner.co.jpjrtours.co.jpkataoka.comaigan.co.jptranbi.comjsdc.or.jplooop-denki.commaspro.co.jpjuchheim.co.jpyozemi.ac.jpfujioh.comkakudai.jpca4la.comfredperry.jpmonteroza.co.jpndsoft.jpzebra.co.jp

Showing 100 of 210 domains.