FSI (JP ISP) — market share 2026

mailbox

According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), FSI (JP ISP) is the mailbox provider for 252 domains — 0.04% of 658,711 domains with MX records. Its strongest TLD is .jp (47.6% of its domains). Detection: primary MX record (lowest preference).

252domains

0.04%of domains with MX records

8distinct TLDs

2026-07-13snapshot (updated daily)

Commonly used together with FSI (JP ISP)

What else the same 252 domains use — cross-tabulated from the same daily snapshot (2026-07-13).

Type	Service	Domains	Share of FSI (JP ISP) users
ESP	FSI Email Security	251	99.6%
ESP	Q-Send	132	52.4%
ESP	Repica WebCAS	13	5.2%
ESP	Amazon SES	7	2.8%
ESP	BizMatrix	4	1.6%
ESP	Zendesk	3	1.2%
ESP	Tricorn	2	0.8%
ESP	WiLL Mail	1	0.4%
ESP	BeSender	1	0.4%
ESP	Salesforce	1	0.4%

TLD distribution (top 8 of 8)

jp — 120 (47.6%)

com — 86 (34.1%)

co.jp — 21 (8.3%)

net — 12 (4.8%)

shop — 8 (3.2%)

ne.jp — 3 (1.2%)

link — 1 (0.4%)

me — 1 (0.4%)

Frequently asked questions

How many domains use FSI (JP ISP)?

252 domains in the Tranco top-1M use FSI (JP ISP) as their mailbox provider as of July 13, 2026, according to Live Direct Marketing's daily DNS scan.

What is FSI (JP ISP)'s market share?

FSI (JP ISP) holds 0.04% of domains with MX records in the Tranco top-1M (snapshot of 2026-07-13). The number is recomputed every day.

What are the biggest alternatives to FSI (JP ISP)?

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 2026-07-13).

Largest mailbox providers in this category

Self-Hosted (22.44%) · Google Workspace (21.78%) · Microsoft 365 (16.74%) · Unknown / Other (7.54%) · Generic / unmatched (mx*.*) (2.57%) · Proofpoint (1.90%) · Generic / unmatched (mail.*) (1.75%) · Yandex 360 (1.64%) · Cloudflare Email Routing (1.60%) · Mimecast (1.52%)

Mailbox providers portfolio → · Full daily report →

Sending through FSI (JP ISP)? Check whether your messages actually reach the inbox at Gmail, Outlook, Yandex and Mail.ru — free inbox placement test.

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Domain sample (top 100 by Tranco rank)

asp-frontier.netform-mailer.jpfuture-s.comizumi.jplindt.jpsoulberry.jpjrhakatacity.com24028.jpfuture-shop.jpsacsbar.compierrotshop.jptokyodesignchannel.compaqtomog.comsuper-kinokuniya.jphobbyra-hobbyre.comperfect-space.jpgold-japan.jpgoldenbearstore.jpfunky802.comjamtrading.jpjeugia.co.jptanabesports.comporco-rosso.co.jphidya.jpamarilyn.co.jpbagmania.jptokyobanana.jpcocolo.jpe-begin.jpitohkyuemon.co.jpjapanmetal.comspinns.jpyanuk.jpmakes.jpgalleria-mall.jpgrand-hirafu.jpcambio.co.jpjamhomemadeonlineshop.comtika.jpatomicgolf.jpmin-mura.jpg-rare.comcolantotte.jpktc.jptimexwatch.jpqueen-eyes.comstst-used.jpjeansfactory.jptaketora.co.jpoenosato.comsugarbuttertree.jphd-parts.jpparigot.jpbritish-made.jpamritara.comjoint-space.co.jpwpc-store.comagriz.netjypers.comcloche.shopguji-online.comcaliforniastreet.netryuyu.nettaberare.coma-golf.netur-s.meala-mode.jpsekimiki-online.jpidog.jprin-kyo.comsho-bionlinestore.jpcoo-co.jphanahiroba.comlionheart-store.commamoru-k.comnunogatari.co.jppeetonline.comsakae-shop.co.jptitivate.jpwl-netshop.comz-father.co.jpkajuen.co.jpsundaymountain.jpj-connection.jptokyokawaiilife.jpsun-ste.com1616idea.comacrotokyo.comadamsjuggler.comalag-in.jpamiami345.shopaqua-garage.jparakawa.shopashford-style.comasia-kobo.comawagen.jpbath-ec.combe-supremer.combikijapan-store.jpbodyhints.jp

Showing 100 of 252 domains.