Heureka Mailing (CZ) — market share 2026

esp

According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Heureka Mailing (CZ) is the email service provider (ESP) for 270 domains — 0.04% of 617,702 SPF-publishing domains. Its strongest TLD is .cz (61.5% of its domains). Detection: include: mechanisms in the SPF record.

270domains

0.04%of SPF-publishing domains

30distinct TLDs

2026-07-13snapshot (updated daily)

Commonly used together with Heureka Mailing (CZ)

What else the same 270 domains use — cross-tabulated from the same daily snapshot (2026-07-13).

Type	Service	Domains	Share of Heureka Mailing (CZ) users
Mailbox	Google Workspace	61	22.6%
Mailbox	Microsoft 365	59	21.9%
Mailbox	Self-Hosted	32	11.9%
Mailbox	Unknown / Other	26	9.6%
Mailbox	Generic / unmatched (mail.*)	19	7.0%
Mailbox	vshosting (CZ)	17	6.3%
ESP	Amazon SES	30	11.1%
ESP	SparkPost	25	9.3%
ESP	Mandrill	25	9.3%
ESP	Mailgun	23	8.5%

TLD distribution (top 30 of 30)

cz — 166 (61.5%)

sk — 49 (18.1%)

com — 8 (3.0%)

eu — 5 (1.9%)

hu — 5 (1.9%)

pl — 4 (1.5%)

shop — 3 (1.1%)

gr — 3 (1.1%)

ua — 2 (0.7%)

hr — 2 (0.7%)

it — 2 (0.7%)

de — 2 (0.7%)

fr — 2 (0.7%)

nl — 1 (0.4%)

online — 1 (0.4%)

bg — 1 (0.4%)

be — 1 (0.4%)

net — 1 (0.4%)

ee — 1 (0.4%)

si — 1 (0.4%)

pro — 1 (0.4%)

group — 1 (0.4%)

rs — 1 (0.4%)

at — 1 (0.4%)

ba — 1 (0.4%)

lt — 1 (0.4%)

lv — 1 (0.4%)

ro — 1 (0.4%)

space — 1 (0.4%)

pt — 1 (0.4%)

Frequently asked questions

How many domains use Heureka Mailing (CZ)?

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

What is Heureka Mailing (CZ)'s market share?

Heureka Mailing (CZ) holds 0.04% 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 Heureka Mailing (CZ)?

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 Heureka Mailing (CZ)? Check whether your messages actually reach the inbox at Gmail, Outlook, Yandex and Mail.ru — free inbox placement test.

Test your deliverability →

Domain sample (top 100 by Tranco rank)

heureka.czdatart.czsportisimo.czheureka.skheureka.groupmtbiker.skknihydobrovsky.czknihobot.czmegaknihy.czmall.cze-kondomy.czsportisimo.skodkarla.czastratex.czgymbeam.skgymbeam.czetabletka.sksconto.czgymbeam.romotora.czsconto.skbonami.czluxor.czpro-doma.czmironet.czgymbeam.hupalmknihy.czonlineshop.czfootshop.czkosmas.czpantarhei.skkeengamer.comkosik.czmotora.skrockpoint.czdronpro.cztsbohemia.czsvet-svitidel.cz8wines.comkupkolo.czgymbeam.uagramodesky.czautodily-pema.czgymbeam.plgymbeam.grgymbeam.it11teamsports.czgymbeam.hrastratex.sknajlacnejsie-knihy.skfakaheda.euimpexautodijelovi.hrautomedik.czsexshop.czgrizly.cznejlevnejsi-knihy.czeberry.czsuperlove.skm-latky.cznejlevnejsinabytek.cztop4running.frmtbiker.shopgymbeam.commojekolo.czbalistas.plmtbiker.czwilsondo.skeconea.czizomat.czpottenpannen.czsanitino.czbalistas.shopgymbeam.deronnie.czautokseft.czkulturistika.comvasky.cznejbaby.czsemena.czmall.skdatacomp.skkellysbike.comprospanek.cztopmode.czzbrane-vzduchovky.czsunnysoft.czglara.eub2bpartner.czbellarose.czmagistra.czbalistas.czlacne-farby-laky.sklampamania.pttrenyrkarna.czglara.czsanitino.skdolnivitkovice.czeta.czfootshop.skpenta.cz

Showing 100 of 270 domains.