Retarus (DE gateway) — market share 2026

esp

According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Retarus (DE gateway) is the email service provider (ESP) for 189 domains — 0.03% of 617,702 SPF-publishing domains. Its strongest TLD is .de (39.7% of its domains). Detection: include: mechanisms in the SPF record.

189domains

0.03%of SPF-publishing domains

24distinct TLDs

2026-07-13snapshot (updated daily)

Commonly used together with Retarus (DE gateway)

What else the same 189 domains use — cross-tabulated from the same daily snapshot (2026-07-13).

Type	Service	Domains	Share of Retarus (DE gateway) users
Mailbox	Retarus	83	43.9%
Mailbox	Microsoft 365	67	35.4%
Mailbox	Self-Hosted	11	5.8%
Mailbox	Proofpoint	6	3.2%
Mailbox	Mimecast	5	2.6%
Mailbox	Unknown / Other	4	2.1%
ESP	IP Made (CDP)	32	16.9%
ESP	Mailgun	19	10.1%
ESP	Mailchimp	12	6.3%
ESP	Mailjet (Sinch)	12	6.3%

TLD distribution (top 24 of 24)

de — 75 (39.7%)

com — 58 (30.7%)

fr — 10 (5.3%)

ch — 8 (4.2%)

at — 6 (3.2%)

it — 5 (2.6%)

es — 4 (2.1%)

nl — 3 (1.6%)

cz — 2 (1.1%)

pl — 2 (1.1%)

org — 2 (1.1%)

eu — 2 (1.1%)

lu — 1 (0.5%)

com.tr — 1 (0.5%)

co.uk — 1 (0.5%)

edu — 1 (0.5%)

sk — 1 (0.5%)

be — 1 (0.5%)

kn — 1 (0.5%)

fitness — 1 (0.5%)

se — 1 (0.5%)

hr — 1 (0.5%)

ro — 1 (0.5%)

net — 1 (0.5%)

Frequently asked questions

How many domains use Retarus (DE gateway)?

189 domains in the Tranco top-1M use Retarus (DE gateway) as their email service provider (ESP) as of July 13, 2026, according to Live Direct Marketing's daily DNS scan.

What is Retarus (DE gateway)'s market share?

Retarus (DE gateway) holds 0.03% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-07-13). The number is recomputed every day.

What are the biggest alternatives to Retarus (DE gateway)?

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 2026-07-13).

Largest email service provider (ESP)s in this category

Amazon SES (6.21%) · SendGrid (Twilio) (4.76%) · Mailgun (4.11%) · Zendesk (3.86%) · Mailchimp (3.69%) · Mandrill (3.36%) · HubSpot (3.18%) · Salesforce (2.62%) · Mailjet (Sinch) (2.13%) · Cloudflare Email Routing (1.80%)

ESP / mailing services portfolio → · Full daily report →

Sending through Retarus (DE gateway)? 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)

adscale.de puma.com hornbach.dehornbach.nlwatson.denotaires.frdaimlertruck.comiledefrance-mobilites.frrfef.esyieldlove.comdzbank.demahle.comthomassabo.comconnectedcooking.comdegiro.nlbmigroup.comseur.comobi.pljazztel.comuk-erlangen.demlp.destroeerdigitalgroup.dehornbach.athornbach.rohornbach.chhornbach.czsupplyon.comhornbach.seloewen-play.deloberon.dehornbach.skflatex.comfuldaerzeitung.degranit-parts.comstroeer.deretarus.comstroeerdigitalmedia.deconti-online.comaerzte-ohne-grenzen.dealltours.defratellowatches.cominsel.chleipziger-buchmesse.deefsllc.comseac.itsilhouette.comgew.defreightliner.comflatex.desage.esleipziger-messe.deihreapotheken.defootball.chmcfit.commueller.atdominos.derandstad.delogpay.detrilux.comarchildrens.orgtraviangames.comod-cloud.deloberon.fravectris.chdeutschesee.deloberon.itloberon.plcjd.demitsubishi-fuso.comdwk.compipelinesystems.deschiedel.comkvbawue.dejohnreed.fitnesstestdaf.dezwickerpc.comsynlab.comstroeer.comhornbach.comebs.eduvde-verlag.depcc.eupaul-lange.dekzvb.dehockenheimring.deallfunds.comeulen.commobile-university.detafel.dewwk.deint.knhornbach.lufeuerwehrmagazin.deflatexdegiro.comwatchtime.netrentenbank.deflatex.atad-hac.eubulthaup.comvorwerk.org

Showing 100 of 189 domains.