Signature365 — market share 2026

esp

According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Signature365 is the email service provider (ESP) for 125 domains — 0.02% of 617,702 SPF-publishing domains. Its strongest TLD is .com (44.0% of its domains). Detection: include: mechanisms in the SPF record.

125domains

0.02%of SPF-publishing domains

21distinct TLDs

2026-07-13snapshot (updated daily)

Commonly used together with Signature365

What else the same 125 domains use — cross-tabulated from the same daily snapshot (2026-07-13).

Type	Service	Domains	Share of Signature365 users
Mailbox	Microsoft 365	95	76.0%
Mailbox	Unknown / Other	12	9.6%
Mailbox	Hornetsecurity	4	3.2%
Mailbox	Cisco IronPort	4	3.2%
Mailbox	Proofpoint	3	2.4%
Mailbox	Google Workspace	1	0.8%
ESP	Mailjet (Sinch)	17	13.6%
ESP	Mailchimp	14	11.2%
ESP	Zendesk	14	11.2%
ESP	HubSpot	12	9.6%

TLD distribution (top 21 of 21)

com — 55 (44.0%)

de — 11 (8.8%)

dk — 10 (8.0%)

nl — 8 (6.4%)

be — 7 (5.6%)

ch — 7 (5.6%)

org — 5 (4.0%)

eu — 3 (2.4%)

in — 3 (2.4%)

pl — 3 (2.4%)

at — 2 (1.6%)

pt — 2 (1.6%)

se — 1 (0.8%)

co.il — 1 (0.8%)

fr — 1 (0.8%)

es — 1 (0.8%)

cz — 1 (0.8%)

ie — 1 (0.8%)

it — 1 (0.8%)

lt — 1 (0.8%)

qa — 1 (0.8%)

Frequently asked questions

How many domains use Signature365?

125 domains in the Tranco top-1M use Signature365 as their email service provider (ESP) as of July 13, 2026, according to Live Direct Marketing's daily DNS scan.

What is Signature365's market share?

Signature365 holds 0.02% 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 Signature365?

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 →

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Domain sample (top 100 by Tranco rank)

nameit.commammut.comlottery.ietvsyd.dkjackjones.infondationdefrance.orgvila.comtrust.comknipex.compairidaiza.eusouthernhobby.comfootball.chnexuzhealth.comgo2africa.comgealan.deveromoda.indragonshield.comsteiff.comkusmitea.combinero.comselected.comeposavje.comptvlogistics.commolteni.itknipex.depieces.comthenavigatorcompany.comivry.euseforall.orglinfosys.comostermann.euveka.combrennenstuhl.competromax.deantenne.atlinfosys.nlprosenectute.chhomerunner.commedtecheurope.orgcenshare.comwagner-system.deprovis.chormat.comhomeshop.dkevidia.deliber.sekop-kande.dkcorendonhotels.commamalicious.comasiliaafrica.comskiaustria.aty-a-s.commoelven.commedicare.pttabledusud.nlbrandbyhand.dkeurocash.plbilligventilation.dkexterioo.beglutz.comcoreview.comhectronic.comvikan.comcept.orglindberghfashion.commaniet.befragt.dkcos.plctg.comdepanne.behtr.chbluewateryachting.comnetip.dkhakro.comapdl.ptrutgers.nlcolmobil.co.ildengamleby.dkvanmossel.bebb.czdierenparkamersfoort.nlbhs-world.comvandentop.nlknipex-tools.comgag-koeln.desbherning.dkcrocodille.comsorainen.comhotelleriesuisse.chloisium.comgitana.ltqrcs.org.qaixia.esgreensign.degruber-logistics.comcvdm.nlselectedhomme.innoisymay.comcitedudesign.comjuntoo.be

Showing 100 of 125 domains.