Paubox — market share 2026

esp

According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Paubox is the email service provider (ESP) for 166 domains — 0.03% of 617,702 SPF-publishing domains. Its strongest TLD is .com (77.1% of its domains). Detection: include: mechanisms in the SPF record.

166domains

0.03%of SPF-publishing domains

12distinct TLDs

2026-07-13snapshot (updated daily)

Commonly used together with Paubox

What else the same 166 domains use — cross-tabulated from the same daily snapshot (2026-07-13).

Type	Service	Domains	Share of Paubox users
Mailbox	Google Workspace	69	41.6%
Mailbox	Microsoft 365	46	27.7%
Mailbox	Generic / unmatched (mx.)	11	6.6%
Mailbox	Proofpoint	11	6.6%
Mailbox	Unknown / Other	6	3.6%
Mailbox	Mimecast	6	3.6%
ESP	HubSpot	42	25.3%
ESP	Salesforce	38	22.9%
ESP	Zendesk	27	16.3%
ESP	Amazon SES	22	13.3%

TLD distribution (top 12 of 12)

com — 128 (77.1%)

org — 19 (11.4%)

ai — 5 (3.0%)

net — 4 (2.4%)

health — 2 (1.2%)

io — 2 (1.2%)

ro — 1 (0.6%)

edu — 1 (0.6%)

us — 1 (0.6%)

vc — 1 (0.6%)

law — 1 (0.6%)

md — 1 (0.6%)

Frequently asked questions

How many domains use Paubox?

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

What is Paubox's market share?

Paubox 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 Paubox?

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 Paubox? 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)

phenompeople.comrvohealth.comjove.comglassesusa.commdcalc.comsleepdoctor.comfullscript.comgrowtherapy.comdeltadental.comrula.comgetfreed.aihonorhealth.comkhealth.comtherecoveryvillage.compersonifyhealth.comvrtx.comspringhealth.compaubox.commedbridge.compatientiq.iohovdomain.orgtesting.comrugiet.comeightsleep.commedecision.compathapplication.comviz.aiphenom.comdentaquest.comqtcm.commdmercy.comrxnt.comrupahealth.commdsave.comspartanburgregional.comstorageunitsoftware.comhopskipdrive.comembroker.comcostplusdrugs.comcrh.orgqueens.orgvaxcare.compsychologytools.comsesamecare.combcbssc.comassh.orgadapthealth.comdosespot.comtuftsmedicine.orgvitalconnect.comgrail.comsimonmed.comenovis.comprenuvo.comabbadox.comgarnethealth.orgnikohealth.commiracle-ear.comvirginpulse.comaltamed.orgosmind.orgsccmo.orgfoodland.comgdx.netpverify.comhov.orgtellescope.comquick.mdpromescent.comwellapp.comguhsd.netcnyfertility.comtechnosysies.commwhc.comempowerpharmacy.com1up.healthdispatchhealth.comagenta-cloud.comcovenanthealth.commovemedical.comelliemd.comkeragon.commiiskin.comtwochairs.comsoutheasthealth.orgswellbox.comprehab.orgveranahealth.comearpros.commind-diagnostics.orgcentralhealth.netmedicalguardian.combostonivf.comsully.aiseastreak.comwellthy.comscan.comnetchemistry.comvgm.comframesdata.com

Showing 100 of 166 domains.