ESP1 — market share 2026

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According to Live Direct Marketing's daily Tranco top-1M scan (July 12, 2026), ESP1 is the email service provider (ESP) for 129 domains — 0.02% of 617,244 SPF-publishing domains. Its strongest TLD is .com (91.5% of its domains). Detection: include: mechanisms in the SPF record.

129domains

0.02%of SPF-publishing domains

8distinct TLDs

2026-07-12snapshot (updated daily)

Commonly used together with ESP1

What else the same 129 domains use — cross-tabulated from the same daily snapshot (2026-07-12).

Type	Service	Domains	Share of ESP1 users
Mailbox	Microsoft 365	47	36.4%
Mailbox	Google Workspace	38	29.5%
Mailbox	Mimecast	13	10.1%
Mailbox	Proofpoint	10	7.8%
Mailbox	Unknown / Other	5	3.9%
Mailbox	Self-Hosted	4	3.1%
ESP	Amazon SES	23	17.8%
ESP	Mailgun	21	16.3%
ESP	SendGrid (Twilio)	20	15.5%
ESP	Zendesk	16	12.4%

TLD distribution (top 8 of 8)

com — 118 (91.5%)

org — 2 (1.6%)

net — 2 (1.6%)

co — 2 (1.6%)

ca — 2 (1.6%)

co.uk — 1 (0.8%)

sc — 1 (0.8%)

eu — 1 (0.8%)

Frequently asked questions

How many domains use ESP1?

129 domains in the Tranco top-1M use ESP1 as their email service provider (ESP) as of July 12, 2026, according to Live Direct Marketing's daily DNS scan.

What is ESP1's market share?

ESP1 holds 0.02% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-07-12). The number is recomputed every day.

What are the biggest alternatives to ESP1?

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 2026-07-12).

Largest email service provider (ESP)s in this category

Amazon SES (6.21%) · SendGrid (Twilio) (4.75%) · Mailgun (4.11%) · Zendesk (3.87%) · 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 →

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Domain sample (top 100 by Tranco rank)

listrakbi.compressdemocrat.comkingarthurbaking.comjomashop.combelmond.comespssl.comdaz3d.comjegs.comar15.com4imprint.comarchpaper.comepicsports.compelicanparts.comesp1.codtlr.comsimplytoimpress.comuniformadvantage.commagpul.comreutersevents.cominsurancenewsnet.comlowellsun.combearcreekarsenal.combbg.orgross-simons.comyandy.combbqguys.comgodiva.comparkseed.comcanvasworld.comhvacdirect.comtandyleather.comworldofwatches.comaustinregionalclinic.commidsouthshooterssupply.comammunitiondepot.comslumberland.comperurail.comlstrk.netbigdweb.comhockeymonkey.comlequipeur.comeverythingbutwater.comrehab-store.comshipsticks.comalastin.commurrayscheese.comharborcompliance.combowlingball.comkleen-ritecorp.comstage3motorsports.comnorthbaybusinessjournal.comsonomanews.comnorthridge4x4.comgilroydispatch.commanlybands.comamiclubwear.comsolidsignal.comperriconemd.comoffroadwarehouse.comoliveandcocoa.compeltzshoes.comautogeek.netartbeads.comgreysonclothiers.comsaxxunderwear.comscrubdaddy.combotach.compremieryarns.comhistoricalemporium.comnatdcp.comprofessionalsupplementcenter.comgoodtimes.screlaxtheback.comgracieuniversity.comhomfurniture.combluesky.comannefontaine.comthelaundress.comvintandyork.combatterystuff.combloomstoday.combulbhead.comgearys.comkiyonna.comsonomamag.comabcwarehouse.comvertex.comgtdist.comshopcatheters.combohemian.comadinaeden.comshockdoctor.comhammernutrition.comthewarmingstore.combestcompaniesgroup.comtandyleather.capetaluma360.comhdis.comthehypothesis.comfreedomunited.org

Showing 100 of 129 domains.