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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 (2,618) Freemail (200) Disposable (589) Corporate (1,134) Education (431) Isp (264)
Domain ▼ Type Organization Mail Server Status
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.edu education Ohio University Microsoft 365 Active View
ogilvy.com corporate Ogilvy Proofpoint Active View
oge.com corporate OGE Energy Microsoft 365 Active View
odu.edu education Old Dominion University Microsoft 365 Active View
odn.ne.jp isp ODN (Japan Telecom) trendmicro.com Active View
ocn.ne.jp isp OCN (NTT Communications) bizmw.com Active View
ochsner.org corporate Ochsner Health Microsoft 365 Active View
oceanspray.com corporate Ocean Spray Cranberries Microsoft 365 Active View
obobbo.com disposable — None Active View
objectmail.com disposable — trashmail.com Active View
oakton.edu education Oakton College Google Workspace Active View
o2online.de isp O2 Germany o2online.de Active View
o2.pl freemail Grupa Pracuj tlen.pl Active View
o2.co.uk isp O2 / Virgin Media None Active View
nyulangone.org corporate NYU Langone Health Proofpoint Active View
nyu.edu education New York University Proofpoint Active View
nytimes.com corporate The New York Times Google Workspace Active View
nyse.com corporate New York Stock Exchange Proofpoint Active View
nxp.com corporate NXP Semiconductors Microsoft 365 Active View
nwtel.ca isp Northwestel Microsoft 365 Active View
nwosu.edu education Northwestern Oklahoma State University Microsoft 365 Active View
nwmissouri.edu education Northwest Missouri State University Microsoft 365 Active View
nwldx.com disposable — above.com Active View
nwfsc.edu education Northwest Florida State College Microsoft 365 Active View
nvidia.com corporate NVIDIA Corporation Microsoft 365 Active View
nvent.com corporate nVent Electric plc Microsoft 365 Active View
nuveen.com corporate Nuveen LLC Microsoft 365 Active View
nutanix.com corporate Nutanix Inc. Proofpoint Active View
nus.edu.sg education National University of Singapore trendmicro.com Active View
numericable.fr isp Numericable sfr.fr Active View
nucor.com corporate Nucor Corporation Microsoft 365 Active View
nubank.com corporate Nu Holdings - Nubank Google Workspace Active View

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