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1,254,660 live sites using Mailgun right now

Email · by Sinch · since 2010 · Proprietary

1.3M sites Dataset updated · 2026-09-12
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All figures as of Sep 12, 2026
1,254,660 Sites detected
0.4% Of all websites

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Mailgun detection is a value inside the Technologies column. Two datasets carry it, switch between them to compare what's included.

webatla-technologies-mailgun-2026-09-12.jsonl.zst · 1,254,660 rows · 14 columns Daily fresh export
DomainTLD suffixTLDDomain typeHTTP statusIP addressCountry by IPSocial networksTechnologies last data checkedTechnologiesPR valueHarmonic valueDomain creation dateDomain expiration date
trustedsite.comcomcomICANNHTTP 20032.187.162.0US{"youtube":["https://youtube.com/c/TrustedSite"],"linkedin":["https://linkedin.com/company/3499508"],"x-twitter":["https://x.com/trustedsite"]}2026-08-20Google Analytics UA UA-61534007-10, HSTS, Clicky, HTTP/2, Wistia, jQuery 3.5.1, Mailgun, Pingdom, jQuery UI 1.13.2, Amazon ALB0.000082725417,169,5802004-06-072027-06-07
gitlab.comcomcomICANNHTTP 200172.65.251.78US{"gitlab":["https://about.gitlab.com/_nuxt/entry.CxrHR81Y.css","https://about.gitlab.com/_nuxt/Banner.BMJkmWbA.css","https://about.gitlab.com/_payload.json?946bdc7f-b32d-4b79-a433-ae09f497605f="],"youtube":["https://youtube.com/channel/UCnMGQ8QHMAnVIsI3xJrihhg"],"facebook":["https://facebook.com/gitlab"],"linkedin":["https://linkedin.com/company/gitlab-com"],"x-twitter":["https://twitter.com/gitlab"]}2026-09-03RSS, HSTS, Ruby, GitLab, HTTP/3, OpenAI, Stripe, Vue.js, Favicon, Mailgun0.000073102918,473,1582004-01-152027-01-15
asa.org.ukorg.ukukICANNHTTP 200104.26.2.14US{"linkedin":["http://linkedin.com/company/advertising-standards-authority","https://linkedin.com/company/9186879"],"x-twitter":["https://twitter.com/cap_uk"]}2026-08-26HSTS, Slick, HTTP/3, jQuery 1.10.1, Favicon, Mailgun, Bootstrap, Modernizr, Cloudflare, Open Graph0.000070730517,620,7441996-07-162027-07-16
pexels.comcomcomICANNHTTP 200104.18.66.220US{"tiktok":["https://tiktok.com/@pexels"],"threads":["https://threads.net/@pexels"],"youtube":["https://youtube.com/pexelsphotos"],"instagram":["https://instagram.com/pexels"],"pinterest":["https://pinterest.com/pexels"]}2026-08-14React, HTTP/3, Sentry, Favicon, Mailgun, Next.js, Node.js, Webpack, Zendesk, OneTrust0.000061950818,619,1082014-05-152027-05-15
python.orgorgorgICANNHTTP 200151.101.0.223US{"github":["https://github.com/python/cpython/issues","https://github.com/python/pythondotorg/issues"],"linkedin":["https://linkedin.com/company/python-software-foundation"],"x-twitter":["https://twitter.com/ThePSF"]}2026-08-15RSS, HSTS, Nginx, HTTP/2, OpenAI, Twilio, jQuery 1.8.2, Favicon, Mailgun, Varnish0.000050604918,545,1761995-03-272033-03-28
DomainTLD suffixTLDDomain typeHTTP statusIP addressCountry by IPSocial networksTechnologies last data checkedTechnologiesDNS last data checkedDNS StatusDNS recordsPR valueHarmonic valueRDAP/WHOIS last data checkedRDAP/WHOIS methodDomain creation dateDomain expiration dateDomain last changedRegistrarRDAP/WHOIS RecordResponse Status RDAP/WHOIS
trustedsite.comcomcomICANNHTTP 20032.187.162.0US{"youtube":["https://youtube.com/c/TrustedSite"],"linkedin":["https://linkedin.com/company/3499508"],"x-twitter":["https://x.com/trustedsite"]}2026-08-20Google Analytics UA UA-61534007-10, HSTS, Clicky, HTTP/2, Wistia, jQuery 3.5.1, Mailgun, Pingdom, jQuery UI 1.13.2, Amazon ALB2026-09-07TRUE{"A":["32.187.162.0","35.87.59.224"],"MX":[{"host":"alt1.aspmx.l.google.com","priority":5},{"host":"alt2.aspmx.l.google.com","priority":5},{"host":"alt3.aspmx.l.google.com","priority":10},{"host":"alt4.aspmx.l.google.com","priority":10},{"host":"aspmx.l.google.com","priority":1}],"NS":["ns-1410.awsdns-48.org","ns-1810.awsdns-34.co.uk","ns-183.awsdns-22.com","ns-551.awsdns-04.net"],"SOA":{"mname":"ns-183.awsdns-22.com","retry":900,"rname":"awsdns-hostmaster.amazon.com","expire":1209600,"serial":1,"minimum":86400,"refresh":7200},"TXT":["google-site-verification=0Jjb2G9I_T4XDABYsxtF2XhQYFNYn3yqUNM3TH78Svw","google-site-verification=4UbkYn6EKgNwRFLNdbZDiHxerNS_1lWXcZmNingEbJs","google-site-verification=q-borZhD_R77ZHW_WJpWuu4iwkq9_XSJayrMsjfo0hg","v=spf1 include:_spf.google.com include:mailgun.org ~all"]}0.000082725417,169,5802026-05-29RDAP2004-06-072027-06-072026-05-03Gandi SAS{"raw_response":{"links":[{"rel":"self","href":"https://rdap.verisign.com/com/v1/domain/TRUSTEDSITE.COM","type":"application/rdap+json","value":"https://rdap.verisign.com/com/v1/domain/TRUSTEDSITE.COM"},{"rel":"related","href":"https://rdap.gandi.net/domain/TRUSTEDSITE.COM","type":"application/rdap+json","value":"https://rdap.gandi.net/domain/TRUSTEDSITE.COM"}],"events":[{"eventDate":"2004-06-07T18:03:44Z","eventAction":"registration"},{"eventDate":"2027-06-07T18:03:44Z","eventAction":"expiration"},{"eventDate":"2026-05-03T18:04:47Z","eventAction":"last changed"},{"eventDate":"2026-05-28T23:24:06Z","eventAction":"last update of RDAP database"}],"handle":"121956385_DOMAIN_COM-VRSN","status":["client transfer prohibited"],"ldhName":"TRUSTEDSITE.COM","notices":[{"links":[{"rel":"terms-of-service","href":"https://www.verisign.com/domain-names/registration-data-access-protocol/terms-service/index.xhtml","type":"text/html","value":"https://rdap.verisign.com/com/v1/domain/trustedsite.com"}],"title":"Terms of Service","description":["Service subject to Terms of Use."]},{"links":[{"href":"https://icann.org/epp","type":"text/html"}],"title":"Status Codes","description":["For more information on domain status codes, please visit https://icann.org/epp"]},{"links":[{"rel":"help","href":"https://icann.org/wicf","type":"text/html","value":"https://rdap.verisign.com/com/v1/domain/trustedsite.com"}],"title":"RDDS Inaccuracy Complaint Form","description":["URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf"]}],"entities":[{"links":[{"rel":"about","href":"http://www.gandi.net","type":"text/html","value":"https://rdap.gandi.net/"}],"roles":["registrar"],"handle":"81","entities":[{"roles":["abuse"],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text",""],["tel",{"type":"voice"},"uri","tel:+33.170377661"],["email",{},"text","abuse@support.gandi.net"]]],"objectClassName":"entity"}],"publicIds":[{"type":"IANA Registrar ID","identifier":"81"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Gandi SAS"]]],"objectClassName":"entity"}],"secureDNS":{"delegationSigned":false},"nameservers":[{"ldhName":"NS-1410.AWSDNS-48.ORG","objectClassName":"nameserver"},{"ldhName":"NS-1810.AWSDNS-34.CO.UK","objectClassName":"nameserver"},{"ldhName":"NS-183.AWSDNS-22.COM","objectClassName":"nameserver"},{"ldhName":"NS-551.AWSDNS-04.NET","objectClassName":"nameserver"}],"objectClassName":"domain","rdapConformance":["rdap_level_0","icann_rdap_technical_implementation_guide_1","icann_rdap_response_profile_1"]}}Domain is active
gitlab.comcomcomICANNHTTP 200172.65.251.78US{"gitlab":["https://about.gitlab.com/_nuxt/entry.CxrHR81Y.css","https://about.gitlab.com/_nuxt/Banner.BMJkmWbA.css","https://about.gitlab.com/_payload.json?946bdc7f-b32d-4b79-a433-ae09f497605f="],"youtube":["https://youtube.com/channel/UCnMGQ8QHMAnVIsI3xJrihhg"],"facebook":["https://facebook.com/gitlab"],"linkedin":["https://linkedin.com/company/gitlab-com"],"x-twitter":["https://twitter.com/gitlab"]}2026-09-03RSS, HSTS, Ruby, GitLab, HTTP/3, OpenAI, Stripe, Vue.js, Favicon, Mailgun2026-08-28TRUE{"A":["172.65.251.78"],"MX":[{"host":"alt1.aspmx.l.google.com","priority":5},{"host":"alt2.aspmx.l.google.com","priority":5},{"host":"alt3.aspmx.l.google.com","priority":10},{"host":"alt4.aspmx.l.google.com","priority":10},{"host":"aspmx.l.google.com","priority":1}],"NS":["diva.ns.cloudflare.com","jermaine.ns.cloudflare.com"],"CAA":[{"tag":"issue","flags":0,"value":"amazon.com"},{"tag":"issue","flags":0,"value":"amazonaws.com"},{"tag":"issue","flags":0,"value":"amazontrust.com"},{"tag":"issue","flags":0,"value":"awstrust.com"},{"tag":"issuewild","flags":0,"value":"comodoca.com"},{"tag":"issue","flags":0,"value":"comodoca.com"},{"tag":"issue","flags":0,"value":"digicert.com; cansignhttpexchanges=yes"},{"tag":"issuewild","flags":0,"value":"digicert.com; cansignhttpexchanges=yes"},{"tag":"issue","flags":0,"value":"globalsign.com"},{"tag":"issue","flags":0,"value":"letsencrypt.org"},{"tag":"issuewild","flags":0,"value":"letsencrypt.org"},{"tag":"iodef","flags":0,"value":"mailto:security@gitlab.com"},{"tag":"issue","flags":0,"value":"pki.goog; cansignhttpexchanges=yes"},{"tag":"issuewild","flags":0,"value":"pki.goog; cansignhttpexchanges=yes"},{"tag":"issue","flags":0,"value":"sectigo.com"},{"tag":"issue","flags":0,"value":"ssl.com"},{"tag":"issuewild","flags":0,"value":"ssl.com"}],"SOA":{"mname":"diva.ns.cloudflare.com","retry":2400,"rname":"dns.cloudflare.com","expire":604800,"serial":2413074858,"minimum":1800,"refresh":10000},"TXT":["MS=ms60523131","MS=ms83893381","_globalsign-domain-verification=4azHJ7gL04Dr8r2VR0txu7OrWg7uZpU6v7LOHVP1b3","adobe-idp-site-verification=5a5e001556a2c0595ed571d2a1f7b5f8a749a00742853e035eb909bdd31622b8","apple-domain-verification=UNUD9vY0Jp9z5TjO","asv=3f763643512ad5bdcc0d42caea1b3951","decagon-domain-verification-cmrbvs=Lb6bOM0iABwwrWBstDaKWS3U8","docusign=1a7d6818-2cf5-4956-a9fb-c3d2e9a578dd","drift-domain-verification=fa583cfff88c496bcc62651057550656a98ab3e689c314255a1a6ae848e3e56d","gitlab-pages-verification-code=5228e61c992af7e65f5f5160f0587fb4","google-site-verification=6Cb3PPpoMp6-xRavXf2HZz03s7pplQeG5MiUaPGIu_Q","google-site-verification=QiG7NTIWpedorFi71mMN7OVe2Fo_yA6RclsxO8stOa8","google-site-verification=XDRo7LEOqv6OV0RfGDFh7G2XgpzdycygGJBqde334q4","google-site-verification=iWR2UGQb3MvVY83zY47ZFrGFVFLG6ADfpjqchlQjnok","google-site-verification=lnPjOx5EAxmESH8FSn4colWVMAxe18K4ZIopDB1IEDY","google-site-verification=uT9dAMjaTlnkbC0VnN5flFWp0Bsze7zHObWjZwkd2p8","google-site-verification=vPPg6DGiVgf5vhzQg5zGISLao6-07-lVzzpqvmCFe5Y","jamf-site-verification=nRPNM9HJGzWzUkvBtgvBrg","mgverify=2dd945066758840fe3bfbd9ccf90e2c6000458f13345baa576338880dcc86658","mgverify=9549a96a4bc9886fbf483bcd56872eaf2b5b9e690d264024041cf446664cb114","onetrust-domain-verification=84b59aa2659244d486b0b86f5db073dd","onetrust-domain-verification=af5b5fda116e45a9b4c4abcd9e571923","openai-domain-verification=dv-Uq90dak9n7LidGh0WsdFOOUu","serval-domain-verification-rahzqw=w9adwbCM3CJ9BrXnAleSWuMqz","smartsheet-site-validation=wTADkxxpf97DU9ZxO4RuFpZJyRvP7MRm","stripe-verification=E331E16D59119AEFB547211475C2E225C1BF6EB8CB885D300536B2852EAD3D74","uber-domain-verification=38ba2b7b-5ae3-4694-9701-086b20ea3d36","v=MCPv1; k=ed25519; p=MmZM6XexKcX4jiWqHtn3M0av9Q7HDmonAdP6PqktwX0=","v=spf1 include:mail.zendesk.com include:_spf.google.com include:mktomail.com include:_spf.salesforce.com include:_spf-ip.gitlab.com a:zgateway.zuora.com include:mailgun.org include:_spf.sendergen.com ip4:35.80.141.6/32 ip4:44.229.121.55/32 -all","zapier-domain-verification-challenge=a1d665be-8176-4ada-9707-4332dfa7a2cc"],"AAAA":["2606:4700:90:0:f22e:fbec:5bed:a9b9"]}0.000073102918,473,1582025-12-17RDAP2004-01-152027-01-152025-12-17Gandi SAS{"raw_response":{"links":[{"rel":"self","href":"https://rdap.verisign.com/com/v1/domain/GITLAB.COM","type":"application/rdap+json","value":"https://rdap.verisign.com/com/v1/domain/GITLAB.COM"},{"rel":"related","href":"https://rdap.gandi.net/domain/GITLAB.COM","type":"application/rdap+json","value":"https://rdap.gandi.net/domain/GITLAB.COM"}],"events":[{"eventDate":"2004-01-15T19:47:28Z","eventAction":"registration"},{"eventDate":"2027-01-15T19:47:28Z","eventAction":"expiration"},{"eventDate":"2025-12-11T19:51:56Z","eventAction":"last changed"},{"eventDate":"2025-12-17T00:25:06Z","eventAction":"last update of RDAP database"}],"handle":"109976857_DOMAIN_COM-VRSN","status":["client transfer prohibited"],"ldhName":"GITLAB.COM","notices":[{"links":[{"rel":"terms-of-service","href":"https://www.verisign.com/domain-names/registration-data-access-protocol/terms-service/index.xhtml","type":"text/html","value":"https://rdap.verisign.com/com/v1/domain/gitlab.com"}],"title":"Terms of Service","description":["Service subject to Terms of Use."]},{"links":[{"href":"https://icann.org/epp","type":"text/html"}],"title":"Status Codes","description":["For more information on domain status codes, please visit https://icann.org/epp"]},{"links":[{"rel":"help","href":"https://icann.org/wicf","type":"text/html","value":"https://rdap.verisign.com/com/v1/domain/gitlab.com"}],"title":"RDDS Inaccuracy Complaint Form","description":["URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf"]}],"entities":[{"links":[{"rel":"about","href":"http://www.gandi.net","type":"text/html","value":"https://rdap.gandi.net/"}],"roles":["registrar"],"handle":"81","entities":[{"roles":["abuse"],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text",""],["tel",{"type":"voice"},"uri","tel:+33.170377661"],["email",{},"text","abuse@support.gandi.net"]]],"objectClassName":"entity"}],"publicIds":[{"type":"IANA Registrar ID","identifier":"81"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Gandi SAS"]]],"objectClassName":"entity"}],"secureDNS":{"delegationSigned":false},"nameservers":[{"ldhName":"DIVA.NS.CLOUDFLARE.COM","objectClassName":"nameserver"},{"ldhName":"JERMAINE.NS.CLOUDFLARE.COM","objectClassName":"nameserver"}],"objectClassName":"domain","rdapConformance":["rdap_level_0","icann_rdap_technical_implementation_guide_1","icann_rdap_response_profile_1"]}}Domain is active
asa.org.ukorg.ukukICANNHTTP 200104.26.2.14US{"linkedin":["http://linkedin.com/company/advertising-standards-authority","https://linkedin.com/company/9186879"],"x-twitter":["https://twitter.com/cap_uk"]}2026-08-26HSTS, Slick, HTTP/3, jQuery 1.10.1, Favicon, Mailgun, Bootstrap, Modernizr, Cloudflare, Open Graph2026-08-29TRUE{"A":["104.26.2.14","104.26.3.14","172.67.68.180"],"MX":[{"host":"mx1-eu1.ppe-hosted.com","priority":5},{"host":"mx2-eu1.ppe-hosted.com","priority":10}],"NS":["dee.ns.cloudflare.com","dion.ns.cloudflare.com"],"CAA":[{"tag":"issue","flags":0,"value":"comodoca.com"},{"tag":"issuewild","flags":0,"value":"comodoca.com"},{"tag":"issue","flags":0,"value":"digicert.com; cansignhttpexchanges=yes"},{"tag":"issuewild","flags":0,"value":"digicert.com; cansignhttpexchanges=yes"},{"tag":"issue","flags":0,"value":"letsencrypt.org"},{"tag":"issuewild","flags":0,"value":"letsencrypt.org"},{"tag":"issue","flags":0,"value":"pki.goog; cansignhttpexchanges=yes"},{"tag":"issuewild","flags":0,"value":"pki.goog; cansignhttpexchanges=yes"},{"tag":"issue","flags":0,"value":"ssl.com"},{"tag":"issuewild","flags":0,"value":"ssl.com"}],"SOA":{"mname":"dee.ns.cloudflare.com","retry":2400,"rname":"dns.cloudflare.com","expire":604800,"serial":2413330182,"minimum":1800,"refresh":10000},"TXT":["MS=432DE4CF08C062407F54ED0F7FB7030CE617D569","MS=ms32927451","google-site-verification=FGfnx5U2mPARTd-QWL438lZZz5ZcLy0YPbFLU3_f71E","google-site-verification=uxxQIR2FTy-AQCeuRoomJAkxpgkSn14Hk3fR4FG8HZA","ppe-1c69b4d45af1dcc7e9fb","v=spf1 a ip4:45.132.108.153/29 ip4:192.254.125.237/24 ip4:213.253.8.217/32 ip4:92.48.104.202/32 include:_spf1.mailgun.org include:_spf2.mailgun.org include:_spf.tacklephishing.com a:dispatch-eu.ppe-hosted.com include:spf.protection.outlook.com include:_s pf.elasticemail.com -all","wRP/4zd7xI3M0Wnf9fE/b6jwf1lHxdqz77uY3Z57KSbH0vzMOgHfemC5RzwnxLJR6dAg3gLax17FDurxYDSrgg=="],"AAAA":["2606:4700:20::681a:20e","2606:4700:20::681a:30e","2606:4700:20::ac43:44b4"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.26.2.14,104.26.3.14,172.67.68.180","ipv6hint=2606:4700:20::681a:20e,2606:4700:20::681a:30e,2606:4700:20::ac43:44b4"],"target":"","priority":1}]}0.000070730517,620,7442026-07-15RDAP1996-07-162027-07-162026-06-17Tucows Inc t/a Tucows{"raw_response":{"links":[{"rel":"self","href":"https://rdap.nominet.uk/uk/domain/asa.org.uk","type":"application/rdap+json","value":"https://rdap.nominet.uk/uk/domain/asa.org.uk"}],"events":[{"eventDate":"1996-07-16T06:35:38Z","eventAction":"registration"},{"eventDate":"2026-06-17T03:53:26.080744Z","eventAction":"last changed"},{"eventDate":"2027-07-16T06:35:38Z","eventAction":"expiration"},{"eventDate":"2026-07-15T02:47:15.598Z","eventAction":"last update of RDAP database"}],"handle":"D_21216036-UK","status":["active"],"ldhName":"asa.org.uk","notices":[{"links":[{"rel":"terms-of-service","href":"https://nominet.uk/rdap-tos","type":"text/html","value":"https://rdap.nominet.uk/uk/domain/asa.org.uk"}],"title":"Terms of Service","description":["The Registry Operator, offers this Registration Data Access Protocol (RDAP) service and provides access to the records in the RDAP database for information purposes only, to assist you in obtaining information about the registration records of existing domain names. The stored information in the RDAP database is provided as is. We do not guarantee its accuracy or completeness, and cannot be held liable if the stored information in the RDAP database is wrong, incomplete, or inaccurate in any way. By querying the RDAP database in any way, you agree that you will not use this data: (i) to allow, enable or otherwise support the transmission of unsolicited, commercial advertising or other solicitations in any form or by any means; (ii) to enable high volume, automated, electronic processes that query or send data to the Registry Operator or any registrar or registrant; (iii) for target advertising; (iv) to cause nuisance to registrants by sending (by any means) messages to or contacting them; (v) to violate any law, rule, regulation or statute; and/or (vi) in violation of applicable data and privacy protection acts. You are explicitly prohibited from extracting, copying and/or using or re-using in any form and by any means (electronically or not) all or part (quantitatively or qualitatively) of the contents of the RDAP database without prior and explicit permission from the Registry Operator. Any copying or transmission of data for commercial purposes violates this prohibition. You agree that we can take measures to limit the use of the RDAP service to protect the privacy of registrants or the integrity of the database. We reserve the right to make changes to this website, the RDAP service, and these Terms and Conditions at any time without prior notice to you. You should review these Terms and Conditions each time you access or use the RDAP database and the RDAP service to learn of any changes. If you do not agree to the changes we have made, your only remedy is to stop your use of the RDAP database and the RDAP service. By executing a query, in any means whatsoever, you agree to these Terms of Service."]},{"links":[{"rel":"glossary","href":"https://icann.org/epp","type":"text/html","value":"https://rdap.nominet.uk/uk/domain/asa.org.uk"}],"title":"Status Codes","description":["For more information on domain status codes, please visit https://icann.org/epp"]},{"links":[{"rel":"help","href":"https://www.nominet.uk/complaints/#complaining-about-incorrect-whois-data","type":"text/html","value":"https://rdap.nominet.uk/uk/domain/asa.org.uk"}],"title":"RDDS Inaccuracy Complaint Form","description":["URL of the Nominet WHOIS data complaint process: 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is active
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Showing 5 of 1,254,660 rows · Technologies · Full website tech stack per site: CMS, payments, analytics, frameworks.

Mailgun sites by country

CountrySitesShare
🇺🇸 United States 818,516 75.9%
🇨🇦 Canada 80,114 7.4%
🇩🇪 Germany 40,166 3.7%
🇬🇧 United Kingdom 21,723 2.0%
🇳🇱 Netherlands 21,648 2.0%

Mailgun sites by TLD

TLDSitesShare
.com 796,042 63.4%
.org 54,025 4.3%
.net 43,564 3.5%
.uk 38,493 3.1%
.au 22,174 1.8%

The Mailgun dataset

Every site we've detected as running Mailgun, with version, hosting, country, TLD and traffic rank.

Mailgun lives inside 2 datasets

Mailgun detection is part of Technologies (€159/mo) and All data (€599/mo). Buy either to filter the full 1,254,660-site list, or grab a free preview first.

Your Mailgun downloads

The datasets you own, sliced to Mailgun. Every button streams the latest daily export directly.

Format: JSONL (zstd) Dataset updated: 2026-09-12

API, columns & recipes → /account/api

About Mailgun

Mailgun runs where a crawler cannot look. Sending mail is a server-side job, and the call that hands a receipt or a password reset to a provider happens between two machines with no browser involved. Everything a public page can reveal about the relationship is indirect, and being clear about that is worth more here than a confident number.

The traces we can work with are the ones a domain publishes about itself. Records that authorize a provider to send on the domain behalf, tracking and click-wrapping hostnames that appear inside content, form endpoints, unsubscribe links, address validation running on a signup form. Each of those is evidence that a relationship exists or existed. None of them is proof of current sending volume, and a domain can carry authorization records for a provider it stopped paying months ago.

The count that results is a floor, and the bias runs in a direction worth naming. Sites that do something visible with the service are overrepresented. Pure back-end use is underrepresented, the archetype being a software product that sends only transactional mail to signed-in users and never mentions its provider anywhere a crawler can reach. A company can be a substantial customer and leave almost no public trace, which means absence from this list proves very little while presence is fairly reliable.

What presence does imply is a specific kind of company. The category label on this page reads Email, and the label understates the case, because this is developer-chosen infrastructure reached through an API rather than a campaign tool with a template gallery. A domain associated with it usually has an application behind it, user accounts, and flows that generate mail as a side effect of somebody doing something. Qualifying a company that way is a different exercise from finding businesses that send newsletters, and for anyone selling to engineering teams it is the more useful of the two.

Ownership is part of the picture as well. Started in 2010 and now operated by Sinch under Proprietary terms, the service brought its installed base through an acquisition, so the domains in this list are accounts of a parent company that also sells other communication channels. For anyone tracking consolidation in that market, the list is a snapshot of what changed hands.

As of September 2026 we associate Mailgun with 1,254,660 sites. United States accounts for 818,516 of them and the suffix mix leans toward .com, which reflects where software companies register domains more than where mail is delivered.

A per-domain lookup answers whether a company you already named appears connected to the provider. The downloadable list answers the questions that require the whole population. How large the API-first segment is in a given country. Which domains switched providers between snapshots, which is the only reliable migration signal available from outside. Which competing services co-occur with it, and what a displacement campaign would actually be sized at before anyone budgets for one.

Frequently asked questions

How many websites use Mailgun?

webatla detects Mailgun on 1.3M websites, refreshed daily, each with its domain, DNS, WHOIS, IP, country and ranking.

Can I download the list of websites using Mailgun?

Yes, as structured JSONL. Grab a free sample first.

What's included for each site, and how fresh is it?

Domain, DNS, RDAP/WHOIS, the full technology stack, IP & country, PageRank and Harmonic, re-detected and re-exported daily.

How do I find the websites using Mailgun?

Buy the technology dataset, then download the complete list of domains we detect using Mailgun, re-exported every day.

What else is in the Mailgun technology data?

Each row places Mailgun next to the other technology on the same site, plus DNS, WHOIS, IP, country and ranking.

Can I download just the sites using Mailgun, or the whole database?

Both. Every site running Mailgun comes in the Technologies dataset, one downloadable file. Or buy All data for the entire database: technologies plus identity, ranking, DNS and RDAP/WHOIS for every domain, combined in one file. Daily fresh export.

How do I download the list of websites using Mailgun?

Three steps: (1) grab the free 10,000-row sample to inspect the schema, (2) buy the Technologies dataset, (3) download the full list of every domain we detect running Mailgun as a JSON Lines file. It is re-exported daily, so you can re-download the freshest list any time inside your access window. Each row carries the domain plus DNS, WHOIS, IP, hosting country and rank.

Get the full list of websites using Mailgun

Pick the dataset that covers what you need. Each one includes Mailgun and downloads as JSONL, rebuilt daily.

Technologies 14 columns

Full website tech stack per site: CMS, payments, analytics, frameworks.

€159 / mo
Buy and download Download preview dataset
All data 23 columns

Everything we have, in a single package. The full webatla universe.

€599 / mo
Buy and download Download preview dataset

Want to compare every dataset side by side? Visit the pricing page