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Find out if an email is real before you send. Select any domain below to verify a mailbox exists, check MX records and mail server health, review SPF, DKIM and DMARC authentication, and see the full deliverability profile. Or upload your entire list to the bulk verifier and clean it with 99.7% accuracy.

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Popular Domains

gmail.com Google LLC yahoo.com Yahoo Inc. outlook.com Microsoft Corporation hotmail.com Microsoft Corporation live.com Microsoft Corporation icloud.com Apple Inc. aol.com AOL Inc. protonmail.com Proton AG comcast.net Comcast Corporation verizon.net Verizon Communications att.net AT&T Inc. msn.com Microsoft Corporation
All (2,731) Freemail (200) Disposable (589) Corporate (1,134) Government (113) Education (431) Isp (264)
Domain ▼ Type Organization Mail Server Status
outlook.cl freemail Microsoft Corporation Microsoft 365 Active View
outlawspam.com disposable — None Active View
ourklips.com disposable — casadorock.com Active View
ou.edu education University of Oklahoma Proofpoint Active View
otis.edu education Otis College of Art and Design Barracuda Active View
otherinbox.com disposable — Mimecast Active View
otenet.gr freemail OTE Greece otenet.gr Active View
osu.edu education Ohio State University Proofpoint Active View
osaka-u.ac.jp education Osaka University Microsoft 365 Active View
orsted.com corporate Orsted Microsoft 365 Active View
oreilly.com corporate O'Reilly Automotive Inc. Google Workspace Active View
oregonstate.edu education Oregon State University Microsoft 365 Active View
oregon.gov government State of Oregon Microsoft 365 Active View
ordinaryamerican.net disposable — spamgourmet.com Active View
orcon.net.nz isp Orcon net.nz Active View
orange.fr freemail Orange SA orange.fr Active View
orange.co.uk isp Orange UK None Active View
oracle.com corporate Oracle Corporation Proofpoint Active View
optusnet.com.au freemail Optus Australia atmailcloud.com Active View
optus.com.au isp Optus Mimecast Active View
optonline.net isp Altice USA / Optimum openwave.ai Active View
optimum.net isp Altice USA openwave.ai Active View
optimizely.com corporate Optimizely Inc. Mimecast Active View
oppo.com corporate OPPO Electronics Microsoft 365 Active View
opm.gov government Office of Personnel Management Microsoft 365 Active View
opentext.com corporate OpenText Corporation Proofpoint Active View
opendoor.com corporate Opendoor Technologies Google Workspace Active View
op.pl freemail Onet Poczta onet.pl Active View
ooredoo.com corporate Ooredoo Group ooredoo.qa Active View
oopi.org disposable — oopi.org Active View
onsemi.com corporate ON Semiconductor Mimecast Active View
online.nl isp Online.nl capitar.com Active View
onewaymail.com disposable — None Active View
onet.pl freemail Ringier Axel Springer Poland onet.pl Active View
oneok.com corporate ONEOK Microsoft 365 Active View
oneoffemail.com disposable — Microsoft 365 Active View
one.lt freemail UAB Cgates Lithuania one.lt Active View
one-time.email disposable — None Active View
omron.com corporate Omron Corporation Microsoft 365 Active View
omnicomgroup.com corporate Omnicom Group Microsoft 365 Active View
olin.edu education Olin College of Engineering Microsoft 365 Active View
olddominionfreight.com corporate Old Dominion Freight Line None Active View
okta.com corporate Okta Inc. Proofpoint Active View
okstate.edu education Oklahoma State University Microsoft 365 Active View
oit.edu education Oregon Institute of Technology Microsoft 365 Active View
oi.com.br isp Oi Telecomunicacoes com.br Active View
ohio.gov government State of Ohio Microsoft 365 Active View
ohio.edu education Ohio University Microsoft 365 Active View
ogilvy.com corporate Ogilvy Proofpoint Active View
oge.com corporate OGE Energy Microsoft 365 Active View

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