How are companies within an index scored?

Each company's primary domain is analyzed for SPF, DKIM, DMARC, BIMI, MTA-STS, DANE/TLSA and DNSSEC. Points are awarded for each standard based on its quality and strictness, totaling up to 100.

What does the grade distribution tell me?

The grade distribution shows the spread of scores across all companies in the index. If most companies score A or A+, the index has strong overall email security. A wide spread from A+ to F indicates significant variation.

Why might a well-known company score poorly?

Email security configuration is often managed independently from other cybersecurity controls. A company may have strong network security but still lack proper DMARC enforcement or MTA-STS deployment.

How often are scores updated?

All domains are rescanned weekly. Changes in DNS records are reflected in the next weekly scan.

🇯🇵 Nikkei 225 Email Security

Weekly audit of email security across 225 companies in the Nikkei 225.

Tokyo Stock Exchange · 225 companies analysed · Scan week: 2026-03-23

Companies listed in the Nikkei 225 score an average of 34/100 for email security this week.
0% of Nikkei 225 companies achieve a grade of A+ or A in email authentication, while 82% receive a D or F.
The average score of 34 is 8 points below the global average of 42, suggesting room for improvement in email authentication.
75.1% of Nikkei 225 companies have deployed DMARC email authentication, and 16.9% enforce a strict reject policy to block spoofed emails.
SPF record deployment stands at 84%, authorizing legitimate sending servers and helping prevent email spoofing.
3% of companies have configured BIMI to display their verified brand logo in supported email clients.
0% enforce TLS encryption for inbound email delivery via MTA-STS, protecting against downgrade attacks.
DNSSEC is enabled on 9.8% of Nikkei 225 domains, adding cryptographic validation to DNS queries.
Sumitomo Mitsui Financial leads the Nikkei 225 with a top score of 73/100 (B).
Dai Nippon Printing has the lowest score at 0/100, indicating significant gaps in email security configuration.
Scores range from 0 to 73 with a median of 38, reflecting varied levels of email security maturity across the index.

Average score

34/ 100

DMARC reject

16.9%

BIMI configured

MTA-STS enforce

DNSSEC enabled

9.8%

A+

121

Average

Median

Min

Max

Company

		Country		Grade	DMARC	SPF	BIMI	MTA-STS	DANE-TLSA	DNSSEC
1	Sumitomo Mitsui Financialsmfg.co.jp	🇯🇵 Japan	73	B	reject	~all	✓	✗	✗	✓
2	Mitsubishi UFJ Financial Groupmufg.jp	🇯🇵 Japan	71	B	reject	~all	✓	✗	✗	✓
3	Suzuki Motorsuzuki.co.jp	🇯🇵 Japan	67	C	quarantine	~all	✗	✗	✗	✓
4	Asahi Group Holdingsasahigroup-holdings.com	🇯🇵 Japan	66	C	quarantine	~all	✗	✗	✗	✓
5	Astellas Pharmaastellas.com	🇯🇵 Japan	63	C	none	~all	✗	✗	✗	✓
6	Toppan Printingtoppan.com	🇯🇵 Japan	61	C	none	~all	✗	✗	✗	✓
7	Tokyo Gastokyo-gas.co.jp	🇯🇵 Japan	60	C	quarantine	~all	✗	✗	✗	✓
8	Japan Tobaccojt.com	🇯🇵 Japan	59	C	reject	-all	✗	✗	✗	✗
9	Mitsubishi Heavy Industriesmhi.com	🇯🇵 Japan	58	C	reject	-all	✗	✗	✗	✗
10	Dentsu Groupdentsu.com	🇯🇵 Japan	58	C	reject	-all	✗	✗	✗	✗
11	Fukuoka Financial Groupfukuoka-fg.com	🇯🇵 Japan	58	C	reject	~all	✓	✗	✗	✗
12	Kawasaki Heavy Industriesglobal.kawasaki.com	🇯🇵 Japan	57+4	C	quarantine	-all	✗	✗	✗	✗
13	Trend Microtrendmicro.com	🇯🇵 Japan	56	C	reject	-all	✓	✗	✗	✓
14	Sojitzsojitz.com	🇯🇵 Japan	56	C	reject	~all	✗	✗	✗	✗
15	Ebaraebara.com	🇯🇵 Japan	56	C	reject	~all	✗	✗	✗	✗
16	Amada Co. Ltd.amada.com	🇯🇵 Japan	56+2	C	reject	~all	✗	✗	✗	✗
17	Nitto Denkonitto.com	🇯🇵 Japan	55	C	reject	~all	✗	✗	✗	✗
18	Takeda Pharmaceuticaltakeda.com	🇯🇵 Japan	55	C	reject	~all	✗	✗	✗	✗
19	Daiichi Sankyods-pharma.co.jp	🇯🇵 Japan	55	C	reject	-all	✗	✗	✗	✓
20	Resona Holdingsresona-gr.co.jp	🇯🇵 Japan	55	C	reject	-all	✓	✗	✗	✗
21	Resonacresonac.com	🇯🇵 Japan	55	C	quarantine	-all	✗	✗	✗	✗
22	NEC Corporationnec.com	🇯🇵 Japan	54	C	reject	~all	✗	✗	✗	✗
23	AGC Inc.agc.com	🇯🇵 Japan	54	C	reject	~all	✗	✗	✗	✗
24	Toyota Motortoyota.com	🇯🇵 Japan	54	C	reject	~all	✗	✗	✗	✗
25	Konamikonami.com	🇯🇵 Japan	54	C	reject	~all	✗	✗	✗	✓
26	IHIihi.com	🇯🇵 Japan	53	C	reject	-all	✗	✗	✗	✗
27	Baycurrentbaycurrent.co.jp	🇯🇵 Japan	53	C	none	~all	✗	✗	✗	✓
28	Casio Computercasio.com	🇯🇵 Japan	52+1	C	quarantine	~all	✗	✗	✗	✗
29	Konica Minolta Holdingskonicaminolta.com	🇯🇵 Japan	52	C	reject	~all	✓	✗	✗	✗
30	MinebeaMitsumiminebea.co.jp	🇯🇵 Japan	52	C	none	-all	✗	✗	✗	✗
31	Mitsubishi Chemical Groupmcgc.com	🇯🇵 Japan	52	C	quarantine	~all	✗	✗	✗	✗
32	Takashimayatakashimaya.co.jp	🇯🇵 Japan	52	C	quarantine	~all	✗	✗	✗	✗
33	Nisshin Seifun Groupnisshin.com	🇯🇵 Japan	51	C	none	~all	✗	✗	✗	✓
34	LY Corporationlycorp.co.jp	🇯🇵 Japan	51	C	quarantine	~all	✗	✗	✗	✗
35	Denkadenka.co.jp	🇯🇵 Japan	51	C	none	~all	✗	✗	✗	✓
36	Tosohtosoh.com	🇯🇵 Japan	51	C	reject	-all	✗	✗	✗	✗
37	JGC Corporationjgc.com	🇯🇵 Japan	51	C	none	-all	✗	✗	✗	✗
38	Nissan Chemical Industriesnissanchem.co.jp	🇯🇵 Japan	50	C	reject	~all	✗	✗	✗	✗
39	Screen Holdingsscreen.co.jp	🇯🇵 Japan	50	C	none	~all	✗	✗	✗	✗
40	Nintendonintendo.co.jp	🇯🇵 Japan	50	C	none	~all	✗	✗	✗	✗
41	Daikin Industriesdaikin.com	🇯🇵 Japan	49	D	none	~all	✗	✗	✗	✗
42	Tokyo Electrontel.com	🇯🇵 Japan	49	D	quarantine	-all	✗	✗	✗	✗
43	Kao Corporationkao.com	🇯🇵 Japan	49	D	reject	~all	✗	✗	✗	✗
44	Hoya Corporationhoya.com	🇯🇵 Japan	49	D	quarantine	-all	✗	✗	✗	✗
45	NH Foodsnipponham.co.jp	🇯🇵 Japan	49	D	none	~all	✗	✗	✗	✗
46	Shiseidoshiseido.com	🇯🇵 Japan	49	D	quarantine	-all	✗	✗	✗	✗
47	Shimizushimz.co.jp	🇯🇵 Japan	49	D	quarantine	~all	✗	✗	✗	✓
48	TEPCO Holdingstepco.co.jp	🇯🇵 Japan	49	D	none	~all	✗	✗	✗	✗
49	Japan Airlinesjal.com	🇯🇵 Japan	49	D	none	~all	✗	✗	✗	✗
50	Tohotoho.co.jp	🇯🇵 Japan	49	D	none	~all	✗	✗	✗	✗
51	Ube Industriesube.com	🇯🇵 Japan	48	D	none	-all	✗	✗	✗	✗
52	Toyota Tsushotoyota-tsusho.com	🇯🇵 Japan	48	D	quarantine	~all	✗	✗	✗	✗
53	ANA Holdingsana.co.jp	🇯🇵 Japan	48	D	none	~all	✗	✗	✗	✗
54	Murata Manufacturingmurata.com	🇯🇵 Japan	48	D	none	~all	✗	✗	✗	✗
55	SMC Corporationsmc.com	🇯🇵 Japan	48	D	none	~all	✗	✗	✗	✗
56	Dai-ichi Life Holdingsdai-ichi-life-hd.com	🇯🇵 Japan	47	D	none	~all	✗	✗	✗	✓
57	Denadena.com	🇯🇵 Japan	47	D	none	~all	✗	✗	✗	✗
58	Alps Alpinealpsalpine.com	🇯🇵 Japan	47	D	quarantine	~all	✗	✗	✗	✗
59	Fujitsufujitsu.com	🇯🇵 Japan	47	D	reject	?all	✗	✗	✗	✗
60	Obayashiobayashi.co.jp	🇯🇵 Japan	47	D	none	~all	✗	✗	✗	✓
61	Chugai Pharmaceuticalchugai-pharm.co.jp	🇯🇵 Japan	47	D	none	~all	✗	✗	✗	✗
62	Inpexinpex.com	🇯🇵 Japan	47	D	none	-all	✗	✗	✗	✗
63	Sekisui Housesekisuihouse.co.jp	🇯🇵 Japan	47	D	none	~all	✗	✗	✗	✓
64	Renesas Electronicsrenesas.com	🇯🇵 Japan	46	D	none	-all	✗	✗	✗	✗
65	Keyencekeyence.com	🇯🇵 Japan	46	D	reject	-all	✗	✗	✗	✗
66	Orixorix.com	🇯🇵 Japan	46	D	reject	~all	✗	✗	✗	✗
67	Yamahayamaha.com	🇯🇵 Japan	46	D	quarantine	~all	✗	✗	✗	✗
68	Meiji Holdingsmeiji.com	🇯🇵 Japan	45	D	none	~all	✗	✗	✗	✗
69	Fuji Electricfujielectric.com	🇯🇵 Japan	45	D	none	?all	✗	✗	✗	✗
70	Disco Corporationdisco.co.jp	🇯🇵 Japan	45+1	D	quarantine	-all	✗	✗	✗	✗
71	Omronomron.com	🇯🇵 Japan	45	D	quarantine	~all	✗	✗	✗	✗
72	Concordia Financialconcordia-fg.jp	🇯🇵 Japan	45	D	reject	?all	✗	✗	✗	✗
73	Mitsui & Comitsui.com	🇯🇵 Japan	45	D	none	-all	✗	✗	✗	✗
74	Nippon Telegraph & Telephonentt.com	🇯🇵 Japan	45	D	quarantine	~all	✗	✗	✗	✗
75	Mitsubishi Motorsmitsubishi-motors.com	🇯🇵 Japan	45	D	quarantine	~all	✗	✗	✗	✗
76	Sumitomo Electricsei.co.jp	🇯🇵 Japan	45	D	none	~all	✗	✗	✗	✗
77	Kikkomankikkoman.com	🇯🇵 Japan	45	D	reject	~all	✗	✗	✗	✗
78	Sumitomo Corporationsumitomocorp.com	🇯🇵 Japan	45	D	quarantine	~all	✗	✗	✗	✗
79	Isetan Mitsukoshi Holdingsimhds.co.jp	🇯🇵 Japan	45	D	none	-all	✗	✗	✗	✗
80	Fast Retailingfastretailing.com	🇯🇵 Japan	45+1	D	quarantine	~all	✗	✗	✗	✗
81	Eisaieisai.com	🇯🇵 Japan	44	D	reject	~all	✗	✗	✗	✗
82	Fujifilm Holdingsfujifilm.com	🇯🇵 Japan	44	D	reject	~all	✗	✗	✗	✗
83	Osaka Gasosakagas.co.jp	🇯🇵 Japan	44	D	none	~all	✗	✗	✗	✗
84	Shionogishionogi.com	🇯🇵 Japan	44	D	none	~all	✗	✗	✗	✗
85	Kawasaki Kisen Kaishakline.co.jp	🇯🇵 Japan	44	D	quarantine	-all	✗	✗	✗	✗
86	TDK Corporationtdk.com	🇯🇵 Japan	43	D	quarantine	-all	✗	✗	✗	✗
87	Marubenimarubeni.com	🇯🇵 Japan	43	D	none	~all	✗	✗	✗	✗
88	Kajimakajima.com	🇯🇵 Japan	43	D	none	~all	✗	✗	✗	✗
89	Mercarimercari.com	🇯🇵 Japan	43	D	reject	-all	✗	✗	✗	✗
90	Mitsui Mining & Smeltingmitsui-kinzoku.com	🇯🇵 Japan	43	D	none	~all	✗	✗	✗	✗
91	Kanadeviakanadevia.com	🇯🇵 Japan	43	D	none	-all	✗	✗	✗	✗
92	Otsuka Holdingsotsuka.com	🇯🇵 Japan	42	D	none	-all	✗	✗	✗	✗
93	Yamaha Motoryamaha-motor.com	🇯🇵 Japan	42	D	none	-all	✗	✗	✗	✗
94	Ajinomotoajinomoto.com	🇯🇵 Japan	42	D	none	~all	✗	✗	✗	✗
95	Dowa Holdingsdowa.co.jp	🇯🇵 Japan	42	D	none	~all	✗	✗	✗	✗
96	Yaskawa Electricyaskawa.co.jp	🇯🇵 Japan	42	D	none	~all	✗	✗	✗	✗
97	Credit Saisonsaisoncard.co.jp	🇯🇵 Japan	41	D	quarantine	~all	✗	✗	✗	✗
98	Nikonnikon.com	🇯🇵 Japan	41	D	quarantine	?all	✗	✗	✗	✗
99	Subarusubaru.co.jp	🇯🇵 Japan	41+4	D	quarantine	~all	✗	✗	✗	✗
100	Kyocerakyocera.com	🇯🇵 Japan	41	D	none	-all	✗	✗	✗	✗
101	Kubotakubota.com	🇯🇵 Japan	41	D	quarantine	~all	✗	✗	✗	✗
102	Keisei Electric Railwaykeisei.co.jp	🇯🇵 Japan	41	D	—	~all	✗	✗	✗	✓
103	Bandai Namcobandainamco.co.jp	🇯🇵 Japan	41	D	none	?all	✗	✗	✗	✗
104	M3m3.com	🇯🇵 Japan	41	D	quarantine	-all	✗	✗	✗	✗
105	Nippon Electric Glassneg.co.jp	🇯🇵 Japan	41	D	none	-all	✗	✗	✗	✗
106	Haseko Corp.haseko.co.jp	🇯🇵 Japan	40	D	reject	~all	✗	✗	✗	✗
107	Terumoterumo.com	🇯🇵 Japan	40	D	none	-all	✗	✗	✗	✗
108	Rakuten Grouprakuten.co.jp	🇯🇵 Japan	40	D	reject	~all	✓	✗	✗	✗
109	Kobe Steelkobelco.co.jp	🇯🇵 Japan	39	D	none	~all	✗	✗	✗	✗
110	Nissuinissui.co.jp	🇯🇵 Japan	39	D	none	~all	✗	✗	✗	✗
111	NGK Insulatorsngkinsulators.com	🇯🇵 Japan	38	D	—	-all	✗	✗	✗	✓
112	Chiba Bankchibabank.co.jp	🇯🇵 Japan	38+4	D	quarantine	~all	✗	✗	✗	✗
113	Sonysony.com	🇯🇵 Japan	38	D	none	-all	✗	✗	✗	✗
114	Tokuyama Corporationtokuyama.co.jp	🇯🇵 Japan	38	D	reject	~all	✗	✗	✗	✗
115	Densodenso.com	🇯🇵 Japan	38	D	quarantine	-all	✗	✗	✗	✗
116	JFE Holdingsjfe-holdings.co.jp	🇯🇵 Japan	37	D	none	~all	✗	✗	✗	✗
117	Hitachihitachi.com	🇯🇵 Japan	37	D	none	~all	✗	✗	✗	✗
118	Socionextsocionext.com	🇯🇵 Japan	37	D	none	~all	✗	✗	✗	✗
119	Advantestadvantest.com	🇯🇵 Japan	37	D	quarantine	-all	✗	✗	✗	✗
120	Mitsubishi Corporationmitsubishicorp.com	🇯🇵 Japan	37	D	none	~all	✗	✗	✗	✗
121	Asahi Kaseiasahi-kasei.com	🇯🇵 Japan	37	D	none	~all	✗	✗	✗	✗
122	Ricohricoh.com	🇯🇵 Japan	37	D	none	~all	✗	✗	✗	✗
123	Kuraraykuraray.com	🇯🇵 Japan	37	D	none	~all	✗	✗	✗	✗
124	Tokio Marine Holdingstokiomarinehd.com	🇯🇵 Japan	37+2	D	none	-all	✗	✗	✗	✗
125	Furukawa Electricfurukawaelectric.com	🇯🇵 Japan	36	D	quarantine	-all	✗	✗	✗	✗
126	Itochuitochu.co.jp	🇯🇵 Japan	36	D	none	~all	✗	✗	✗	✗
127	Nomura Research Institutenri.com	🇯🇵 Japan	36	D	none	~all	✗	✗	✗	✗
128	NTNntn.com	🇯🇵 Japan	36	D	none	~all	✗	✗	✗	✗
129	Rohmrohm.com	🇯🇵 Japan	36	D	—	-all	✗	✗	✗	✗
130	West Japan Railwaywestjr.co.jp	🇯🇵 Japan	36	D	quarantine	~all	✗	✗	✗	✗
131	East Japan Railwayjreast.co.jp	🇯🇵 Japan	36	D	none	~all	✗	✗	✗	✗
132	Yokogawa Electricyokogawa.com	🇯🇵 Japan	35	D	quarantine	~all	✗	✗	✗	✗
133	Japan Exchange Groupjpx.co.jp	🇯🇵 Japan	35	D	quarantine	~all	✗	✗	✗	✗
134	Okuma Holdingsokuma.com	🇯🇵 Japan	35	D	none	~all	✗	✗	✗	✗
135	Nichireinichirei.co.jp	🇯🇵 Japan	34	D	none	~all	✗	✗	✗	✗
136	Aozora Bankaozorabank.co.jp	🇯🇵 Japan	34	D	quarantine	~all	✗	✗	✗	✗
137	Keiokeio.co.jp	🇯🇵 Japan	34+2	D	none	~all	✗	✗	✗	✗
138	KDDIkddi.com	🇯🇵 Japan	34	D	quarantine	~all	✗	✗	✗	✗
139	Taiseitaisei.co.jp	🇯🇵 Japan	34	D	none	~all	✗	✗	✗	✗
140	Nexonnexon.co.jp	🇯🇵 Japan	34	D	none	-all	✗	✗	✗	✗
141	Sumitomo Mitsui Trust Holdingssmtg.jp	🇯🇵 Japan	34	D	quarantine	~all	✗	✗	✗	✗
142	Sompo Holdingssompo.com	🇯🇵 Japan	33	D	reject	-all	✗	✗	✗	✗
143	Secomsecom.co.jp	🇯🇵 Japan	33	D	none	~all	✗	✗	✗	✗
144	Idemitsu Kosanidemitsu.com	🇯🇵 Japan	33+2	D	none	~all	✗	✗	✗	✗
145	Isuzu Motorsisuzu.co.jp	🇯🇵 Japan	33	D	none	-all	✗	✗	✗	✗
146	Taiheiyo Cementtaiheiyo-cement.co.jp	🇯🇵 Japan	33	D	none	~all	✗	✗	✗	✗
147	Yamato Holdingsyamato-hd.co.jp	🇯🇵 Japan	32	D	reject	-all	✗	✗	✗	✗
148	Chubu Electric Powerchuden.co.jp	🇯🇵 Japan	32	D	none	-all	✗	✗	✗	✗
149	Kyowa Kirinkyowakirin.com	🇯🇵 Japan	32	D	none	~all	✗	✗	✗	✗
150	Mazdamazda.co.jp	🇯🇵 Japan	32	D	none	~all	✗	✗	✗	✗
151	NSKnsk.com	🇯🇵 Japan	32	D	none	-all	✗	✗	✗	✗
152	Recruit Holdingsrecruit.co.jp	🇯🇵 Japan	32	D	quarantine	~all	✗	✗	✗	✗
153	SHIFT Inc.shiftinc.jp	🇯🇵 Japan	32+1	D	none	~all	✗	✗	✗	✗
154	Japan Post Holdingsjapanpost.jp	🇯🇵 Japan	32	D	reject	-all	✗	✗	✗	✗
155	TOTOtoto.co.jp	🇯🇵 Japan	32	D	none	~all	✗	✗	✗	✗
156	JTEKTjtekt.co.jp	🇯🇵 Japan	32	D	none	~all	✗	✗	✗	✗
157	Mitsui Chemicalsmitsuichemicals.com	🇯🇵 Japan	32	D	quarantine	~all	✗	✗	✗	✗
158	Bridgestonebridgestone.com	🇯🇵 Japan	31	D	none	-all	✗	✗	✗	✗
159	Olympus Corporationolympus.co.jp	🇯🇵 Japan	31	D	none	~all	✗	✗	✗	✗
160	Tokai Carbontokaicarbon.co.jp	🇯🇵 Japan	31	D	—	~all	✗	✗	✗	✗
161	Canoncanon.com	🇯🇵 Japan	30	D	quarantine	-all	✗	✗	✗	✗
162	Tobu Railwaytobu.co.jp	🇯🇵 Japan	29	F	none	~all	✗	✗	✗	✗
163	Aeonaeon.info	🇯🇵 Japan	29	F	—	-all	✗	✗	✗	✗
164	Toray Industriestoray.com	🇯🇵 Japan	29	F	—	—	✗	✗	✗	✓
165	Nissan Motornissan.co.jp	🇯🇵 Japan	29	F	none	~all	✗	✗	✗	✗
166	Marui Group0101maruigroup.co.jp	🇯🇵 Japan	29	F	—	-all	✗	✗	✗	✗
167	Oji Holdings Corporationojiholdings.co.jp	🇯🇵 Japan	28	F	none	~all	✗	✗	✗	✗
168	Honda Motorhonda.com	🇯🇵 Japan	28	F	—	~all	✗	✗	✗	✗
169	MS&AD Insurancems-ins.com	🇯🇵 Japan	27	F	none	~all	✗	✗	✗	✗
170	Shin-Etsu Chemicalshinetsu.co.jp	🇯🇵 Japan	27	F	reject	~all	✗	✗	✗	✗
171	Komatsukomatsu.com	🇯🇵 Japan	26	F	none	-all	✗	✗	✗	✗
172	Central Japan Railwayjr-central.co.jp	🇯🇵 Japan	26	F	none	~all	✗	✗	✗	✗
173	Oriental Landolc.co.jp	🇯🇵 Japan	26	F	none	~all	✗	✗	✗	✗
174	Sumitomo Chemicalsumitomo-chem.co.jp	🇯🇵 Japan	23	F	none	~all	✗	✗	✗	✗
175	Kansai Electric Powerkansai-td.co.jp	🇯🇵 Japan	21	F	none	~all	✗	✗	✗	✗
176	Mitsubishi Electricmitsubishielectric.com	🇯🇵 Japan	20	F	—	~all	✗	✗	✗	✗
177	SUMCOsumco.com	🇯🇵 Japan	20	F	—	~all	✗	✗	✗	✗
178	T&D Holdingstd-holdings.co.jp	🇯🇵 Japan	20	F	—	~all	✗	✗	✗	✗
179	Teijinteijin.com	🇯🇵 Japan	20	F	—	~all	✗	✗	✗	✗
180	Nippon Yusennyk.com	🇯🇵 Japan	15	F	—	-all	✗	✗	✗	✗
181	SoftBank Groupgroup.softbank	🇯🇵 Japan	15	F	—	-all	✗	✗	✗	✗
182	Tokyu Landtokyuland.com	🇯🇵 Japan	15	F	—	—	✗	✗	✗	✓
183	Panasonic Holdingspanasonic.com	🇯🇵 Japan	15	F	—	-all	✗	✗	✗	✗
184	Yokohama Rubberyokohamarubber.com	🇯🇵 Japan	15	F	—	-all	✗	✗	✗	✗
185	Fanucfanuc.com	🇯🇵 Japan	15	F	—	-all	✗	✗	✗	✗
186	Daiwa Securitiesdaiwa.jp	🇯🇵 Japan	15	F	—	—	✗	✗	✗	✓
187	Laserteclasertec.com	🇯🇵 Japan	14	F	—	—	✗	✗	✗	✗
188	Nippon Steelnipponsteel.com	🇯🇵 Japan	14	F	—	—	✗	✗	✗	✗
189	Fujikurafujikura.co.jp	🇯🇵 Japan	14	F	—	—	✗	✗	✗	✗
190	Hitachi Construction Machineryhitachicm.com	🇯🇵 Japan	12	F	—	~all	✗	✗	✗	✗
191	ZOZOcorp.zozo.com	🇯🇵 Japan	12	F	quarantine	—	✗	✗	✗	✗
192	SoftBank Corpsoftbank.jp	🇯🇵 Japan	12	F	—	~all	✗	✗	✗	✗
193	CyberAgentcyberagent.com	🇯🇵 Japan	10	F	—	?all	✗	✗	✗	✗
194	Sapporo Holdingssapporoholdings.jp	🇯🇵 Japan	10	F	—	~all	✗	✗	✗	✗
195	Mitsubishi Estatemitsubishiestate.com	🇯🇵 Japan	8	F	—	—	✗	✗	✗	✗
196	Shizuoka Financial Groupshizuoka-fg.co.jp	🇯🇵 Japan	8	F	none	—	✗	✗	✗	✗
197	Comsys Holdingscomsys-hd.co.jp	🇯🇵 Japan	8	F	—	—	✗	✗	✗	✗
198	Sumitomo Dainippon Pharmasumitomo-pharma.com	🇯🇵 Japan	8	F	—	—	✗	✗	✗	✗
199	J.Front Retailingj-front-retailing.com	🇯🇵 Japan	8	F	—	—	✗	✗	✗	✗
200	Mizuho Financial Groupmizuho-fg.co.jp	🇯🇵 Japan	1	F	—	-all	✗	✗	✗	✗
201	Kirin Holdingskirinholdings.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
202	Daiwa Housedaiwahouse.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
203	Nomura Holdingsnomuraholdings.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
204	Hino Motorshino-global.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
205	Sumitomo Heavy Industriessumitomoheavy.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
206	Odakyu Electric Railwayodakyu.co.jp	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
207	GS Yuasagsyuasa.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
208	Eneos Holdingseneos.co.jp	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
209	Sumitomo Metal Miningsmm-hd.co.jp	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
210	Sumitomo Realtysumitomorealty.co.jp	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
211	Tokyutokyu.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
212	Mitsui Fudosanmitsui-fudosan.co.jp	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
213	Japan Steel Worksjapansteelworks.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
214	Tokyo Tatemonotokyotatemono.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
215	Mujiryohin-keikaku.jp	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
216	Taiyo Yudentaiyoyuden.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
217	Mitsui O.S.K. Linesmitsuiosklines.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
218	Mitsubishi Materialsmitsubishimaterials.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
219	Seven & i Holdings7andi.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
220	Sharpglobal.sharp	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
221	Seiko Epsoncorporate.epson	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
222	Ibidenibiden.co.jp	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
223	Nippon Express Holdingsnipponexpress-holdings.com	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
224	Nitori Holdingsnitori-holdings.co.jp	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗
225	Dai Nippon Printingglobal.dnp	🇯🇵 Japan	0	F	—	—	✗	✗	✗	✗

Understanding index-level analysis

A stock index groups the largest companies in a market. Analyzing their email security provides a representative snapshot of how a country's or region's corporate sector protects against email-based threats.

What this page shows:

Average score - The mean email security score across all constituent companies
Grade distribution - How many companies fall into each grade bracket (A+ through F)
Company table - Individual scores, grades and key indicator status for each company
Sector breakdown - How different industries within the index compare

Key standards tracked

Each company is evaluated on:

SPF - Is the sending policy properly configured? Does it use -all (hard fail)?
DKIM - Are signing keys published and strong enough (2048-bit minimum)?
DMARC - Is a policy in place? Is it set to quarantine or reject?
BIMI - Is the brand logo published for inbox display?
MTA-STS - Is inbound email transport encryption enforced?
DNSSEC - Is the DNS zone signed to prevent spoofing?

FAQ - Frequently asked questions

Q: How are companies scored?

A: Each domain is analyzed for email authentication standards and awarded up to 100 points across three pillars.

Q: What does the grade distribution show?

A: The spread of scores from A+ to F, indicating overall index maturity.

Q: Can I compare indices?

A: Yes, via the Statistics page.

Page	Purpose
Observatory Dashboard	Overall overview with key metrics
Statistics	Cross-index and cross-sector comparison
Email Domain Check	Audit your own domain

🇯🇵 Nikkei 225 Email Security

Company

Understanding index-level analysis

Key standards tracked

FAQ - Frequently asked questions

Related pages