> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/email-format/browse/o/ # Company email formats starting with O The email format of companies whose name starts with O. By Enrich.chat Editorial. Updated October 21, 2026. ## Browse A to Z - [A](https://enrich.chat/email-format/browse/a/) - [B](https://enrich.chat/email-format/browse/b/) - [C](https://enrich.chat/email-format/browse/c/) - [D](https://enrich.chat/email-format/browse/d/) - [E](https://enrich.chat/email-format/browse/e/) - [F](https://enrich.chat/email-format/browse/f/) - [G](https://enrich.chat/email-format/browse/g/) - [H](https://enrich.chat/email-format/browse/h/) - [I](https://enrich.chat/email-format/browse/i/) - [J](https://enrich.chat/email-format/browse/j/) - [K](https://enrich.chat/email-format/browse/k/) - [L](https://enrich.chat/email-format/browse/l/) - [M](https://enrich.chat/email-format/browse/m/) - [N](https://enrich.chat/email-format/browse/n/) - [O](https://enrich.chat/email-format/browse/o/) - [P](https://enrich.chat/email-format/browse/p/) - [Q](https://enrich.chat/email-format/browse/q/) - [R](https://enrich.chat/email-format/browse/r/) - [S](https://enrich.chat/email-format/browse/s/) - [T](https://enrich.chat/email-format/browse/t/) - [U](https://enrich.chat/email-format/browse/u/) - [V](https://enrich.chat/email-format/browse/v/) - [W](https://enrich.chat/email-format/browse/w/) - [X](https://enrich.chat/email-format/browse/x/) - [Y](https://enrich.chat/email-format/browse/y/) - [Z](https://enrich.chat/email-format/browse/z/) - [0-9](https://enrich.chat/email-format/browse/0-9/) ## Companies starting with O - [O'Reilly Auto Parts](https://enrich.chat/email-format/oreilly-auto-parts/): flast@oreillyauto.com - [O-I](https://enrich.chat/email-format/o-i/): first.last@o-i.com - [Oak View Group](https://enrich.chat/email-format/oak-view-group/): flast@oakviewgroup.com - [Oberoi Hotels & Resorts](https://enrich.chat/email-format/oberoi-hotels-and-resorts/): first.last@oberoihotels.com - [OBI Group Holding](https://enrich.chat/email-format/obi-group-holding/): first.last@obi.de - [OCBC](https://enrich.chat/email-format/ocbc/): firstlast@ocbc.com - [Oceaneering International](https://enrich.chat/email-format/oceaneering-international/): flast@oceaneering.com - [Ochsner Health](https://enrich.chat/email-format/ochsner-health/): flast@ochsner.org - [OCS](https://enrich.chat/email-format/ocs/): first_last@ocs.com - [Odense Kommune](https://enrich.chat/email-format/odense-kommune/): first.last@odense.dk - [Office Depot](https://enrich.chat/email-format/office-depot/): first.last@officedepot.com - [Officeworks](https://enrich.chat/email-format/officeworks/): flast@officeworks.com.au - [Ogilvy](https://enrich.chat/email-format/ogilvy/): first.last@ogilvy.com - [Ohio University](https://enrich.chat/email-format/ohio-university/): last@ohio.edu - [OhioHealth](https://enrich.chat/email-format/ohiohealth/): flast@ohiohealth.com - [Oklahoma State University](https://enrich.chat/email-format/oklahoma-state-university/): first.last@okstate.edu - [Okta](https://enrich.chat/email-format/okta/): first.last@okta.com - [Olam](https://enrich.chat/email-format/olam/): flast@olamgroup.com - [Old Mutual](https://enrich.chat/email-format/old-mutual/): flast@oldmutual.com - [Olive Garden](https://enrich.chat/email-format/olive-garden/): flast@olivegarden.com - [Oliver Wyman](https://enrich.chat/email-format/oliver-wyman/): first.last@oliverwyman.com - [Omega Healthcare Management Services](https://enrich.chat/email-format/omega-healthcare-management-services/): first.last@omegahms.com - [Omnicare, a CVS Health](https://enrich.chat/email-format/omnicare-a-cvs-health/): first.last@omnicare.com - [Omnicom](https://enrich.chat/email-format/omnicom/): first.last@omnicomgroup.com - [Omnicom Media Group](https://enrich.chat/email-format/omnicom-media-group/): first.last@omnicommediagroup.com - [OMV](https://enrich.chat/email-format/omv/): first.last@omv.com - [OneMain Financial](https://enrich.chat/email-format/onemain-financial/): first.last@onemainfinancial.com - [Onsemi](https://enrich.chat/email-format/onsemi/): first.last@onsemi.com - [OOCL](https://enrich.chat/email-format/oocl/): first.last@oocl.com - [Ooredoo Group](https://enrich.chat/email-format/ooredoo-group/): flast@ooredoo.com - [Ooredoo Qatar](https://enrich.chat/email-format/ooredoo-qatar/): flast@ooredoo.qa - [Ooredoo Tunisie](https://enrich.chat/email-format/ooredoo-tunisie/): first.last@ooredoo.tn - [OP Financial Group](https://enrich.chat/email-format/op-financial-group/): first.last@op.fi - [Opel](https://enrich.chat/email-format/opel/): first.last@opel.com - [Open Text](https://enrich.chat/email-format/open-text/): flast@opentext.com - [OpenAI](https://enrich.chat/email-format/openai/): first@openai.com - [Openreach](https://enrich.chat/email-format/openreach/): first.last@openreach.co.uk - [OPPO](https://enrich.chat/email-format/oppo/): first.last@oppo.com - [Optum](https://enrich.chat/email-format/optum/): first.last@optum.com - [Optus](https://enrich.chat/email-format/optus/): first.last@optus.com.au - [Oracle](https://enrich.chat/email-format/oracle/): first.last@oracle.com - [Orange](https://enrich.chat/email-format/orange/): first.last@orange.com - [Orange Business](https://enrich.chat/email-format/orange-business/): flast@orange-business.com - [Orange Egypt](https://enrich.chat/email-format/orange-egypt/): first.last@orange.eg - [Orano](https://enrich.chat/email-format/orano/): first.last@orano.group - [Orascom Construction](https://enrich.chat/email-format/orascom-construction/): first.last@orascom.com - [Orbital ATK](https://enrich.chat/email-format/orbital-atk/): first.last@orbitalatk.com - [Oregon State University](https://enrich.chat/email-format/oregon-state-university/): first.last@oregonstate.edu - [Organon](https://enrich.chat/email-format/organon/): first.last@organon.com - [Orica](https://enrich.chat/email-format/orica/): first.last@orica.com - [Oriflame Cosmetics](https://enrich.chat/email-format/oriflame-cosmetics/): first.last@oriflame.com - [Orlando Health](https://enrich.chat/email-format/orlando-health/): first.last@orlandohealth.com - [OSF HealthCare](https://enrich.chat/email-format/osf-healthcare/): first.last@osfhealthcare.org - [Oshkosh](https://enrich.chat/email-format/oshkosh/): flast@oshkoshcorp.com - [Otis Elevator](https://enrich.chat/email-format/otis-elevator/): first.last@otis.com - [Ottobock](https://enrich.chat/email-format/ottobock/): first.last@ottobock.com - [Outback Steakhouse](https://enrich.chat/email-format/outback-steakhouse/): firstlast@outback.com - [Outlier](https://enrich.chat/email-format/outlier/): first@outlier.ai - [Owens & Minor](https://enrich.chat/email-format/owens-and-minor/): first.last@owens-minor.com - [Owens Corning](https://enrich.chat/email-format/owens-corning/): first.last@owenscorning.com - [Oxfam](https://enrich.chat/email-format/oxfam/): flast@oxfam.org.uk - [OXXO](https://enrich.chat/email-format/oxxo/): first.last@oxxo.com - [Oxy](https://enrich.chat/email-format/oxy/): first_last@oxy.com - [OYO](https://enrich.chat/email-format/oyo/): first.last@oyorooms.com **Short answer:** These are company email formats for names that start with O. Open one for the pattern, an example and how to verify an address. ## Key takeaways - Verify any address before you send, since some people at a company use other formats. - Use the A to Z links on the Email formats page to jump to another letter. ## Frequently asked questions ### How do I find a company email format? Open the company page for its pattern and an example, or use the free email format finder with its website.