📧 Mail Platforms & Security

Microsoft 365, Google, one.com and more, with SPF, DMARC, MTA-STS, DANE and DKIM per platform · all insights

Who runs e-mail for .dk domains, measured from each domain's primary MX, and how well each platform's customers are protected by SPF, DMARC, MTA-STS, DANE and DKIM. Data comes from our own scanners, which re-resolve every .dk domain in the zone roughly once a week.

📧 Mail platforms (primary MX)

735,115 domains with mail

Platform	Domains	Share	Trend
one.com	157,444	21.4%	trend starts 2026-09-29
Simply.com	122,282	16.6%	trend starts 2026-09-29
Microsoft 365	104,133	14.2%	trend starts 2026-09-29
DanDomain	41,849	5.7%	trend starts 2026-09-29
Google Workspace	40,344	5.5%	trend starts 2026-09-29
Webhosting.dk	18,462	2.5%	trend starts 2026-09-29
Gigahost	16,669	2.3%	trend starts 2026-09-29
onlinemail.io	13,798	1.9%	trend starts 2026-09-29
scannet.dk	8,966	1.2%	trend starts 2026-09-29
cloudflare.net	6,668	0.9%	trend starts 2026-09-29
spamfilter.io	5,510	0.7%	trend starts 2026-09-29
serverpark.dk	5,261	0.7%	trend starts 2026-09-29
spamfri.dk	4,301	0.6%	trend starts today
Proton	4,030	0.5%	trend starts today
hostedemail.com	3,182	0.4%	trend starts today
hostinger.com	2,655	0.4%	trend starts today
cscdns.net	2,481	0.3%	trend starts today
udag.de	2,459	0.3%	trend starts today
Zoho	2,388	0.3%	trend starts today
wannafind.dk	2,317	0.3%	trend starts today
mailspamprotection.com	2,268	0.3%	trend starts today
mailanyone.net	2,243	0.3%	trend starts today
iCloud	2,133	0.3%	trend starts today
dotserv.com	1,620	0.2%	trend starts today
netsite.dk	1,578	0.2%	trend starts today
centerasecurity.dk	1,367	0.2%	trend starts today
powerhosting.dk	1,307	0.2%	trend starts today
ovh.net	1,176	0.2%	trend starts today
your-server.de	1,116	0.2%	trend starts today
kasserver.com	1,102	0.1%	trend starts today
other	154,006	20.9%	trend starts today

🛡️ Mail security by platform

Platform	SPF	SPF -all	DMARC	DMARC enforcing	MTA-STS enforce	DANE (MX)
one.com	14%	3%	8%	5%	0.0%	99%
Simply.com	83%	66%	70%	68%	0.0%	99%
Microsoft 365	98%	89%	41%	27%	0.1%	1%
DanDomain	38%	15%	7%	2%	0.0%	0%
Google Workspace	55%	15%	34%	16%	0.2%	0%
Webhosting.dk	20%	2%	17%	2%	0.0%	100%
Gigahost	41%	38%	36%	32%	0.0%	0%
onlinemail.io	94%	47%	29%	13%	0.0%	0%
scannet.dk	33%	8%	5%	2%	0.0%	0%
cloudflare.net	100%	3%	27%	11%	0.0%	100%
spamfilter.io	91%	25%	21%	9%	0.0%	100%
serverpark.dk	100%	0%	99%	0%	0.0%	0%
spamfri.dk	97%	39%	62%	4%	0.0%	100%
Proton	99%	6%	92%	76%	0.2%	100%
hostedemail.com	70%	1%	11%	1%	0.0%	0%
hostinger.com	97%	1%	91%	1%	0.0%	0%
cscdns.net	27%	24%	29%	27%	0.0%	0%
udag.de	95%	2%	3%	3%	0.0%	0%
Zoho	92%	9%	37%	16%	0.0%	0%
wannafind.dk	94%	9%	8%	2%	0.0%	0%
mailspamprotection.com	96%	3%	90%	4%	0.0%	0%
mailanyone.net	95%	82%	59%	41%	0.1%	76%
iCloud	99%	2%	23%	13%	0.1%	0%
dotserv.com	91%	86%	98%	57%	0.0%	0%
netsite.dk	83%	1%	81%	80%	0.0%	0%
centerasecurity.dk	98%	93%	80%	60%	0.3%	100%
powerhosting.dk	95%	87%	89%	85%	19.7%	100%
ovh.net	66%	48%	3%	1%	0.0%	0%
your-server.de	92%	9%	27%	10%	0.1%	0%
kasserver.com	99%	1%	55%	1%	0.0%	0%
other	66%	24%	41%	14%	0.3%	6%

DMARC enforcing = p=quarantine or p=reject. DANE counts TLSA records on the domain's MX hosts, so it reflects the platform more than the customer.

✍️ DKIM & BIMI

Based on 55,778 domains probed so far (4.1% of the zone). Our scanners refresh these probes at least every 30 days, so the numbers fill in and settle over the first month.

5,878 probed domains (10.5%) have a DKIM key at a common selector, and 31 publish a BIMI logo record.

Selector	Keys
default	3,026
selector1	1,496
selector2	770
s1	663
s2	612
google	474
mail	381
dkim	380
k1	330

Key size	Keys
2048 bit	5,694
1024 bit	1,690
revoked	729
≤ 768 bit	8
4096 bit	8
3072 bit	3

Delegated to (CNAME)	Domains
onmicrosoft.com	1,176
sendgrid.net	439
mail.microsoft	374
mcsv.net	185
dnssmarthost.net	117
powerhosting.dk	76
ascendbywix.com	36
webnode.com	23
tutanota.de	10
simplelogin.co	9
wpx.net	3
ngdc.net	2
hovmark.dk	2
atlassian.net	2
oneopensky.dk	2
onlinemail.io	1
marketingautomation.services	1
hobit.dk	1
curnon.dk	1
greait.cloud	1