Personalize the OWA URL for Office 365

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I have received the follow question a couple of times, so I thought I would write a blog post about it.

If it is possible to add a more intuitive and simple URL for mail hosted on Office 365?

It is possible and described below.

The known URL for Office 365 is: http://portal.microsoft.com – from there the users can access Outlook and SharePoint. But what if end users, just want to quickly access Exchange OWA.

And the portal.microsoft.com URL might not even be the easiest for many end users to remember, when they are used to something like mail.contoso.com.

The direct URL for Exchange Online (Office 365) is: mail.office365.com

It is possible to update your DNS records to point at this DNS record.

Create a CNAME for mail.contoso.com which points to mail.office365.com

Now your end users can access their Outlook Web App in Office 365 using http://mail.contoso.com because it automatically redirects to https://mail.office365.com

The above is the easy way of supplying your end users, with a new URL for OWA (Office 365).

Things are a lot different in Hybrid scenarios, see the article below for reference to hybrid scenarios: http://community.office365.com/en-us/w/officeapps/simplify-the-owa-url-for-office-365-hybrid.aspx

About Author

Peter is an Exchange specialist with over 15+ years of experience with Exchange Server and certified Microsoft Certified Master (MCM) and Microsoft Certified Solutions Master (MCSM) on Exchange Server. He has been awarded the Microsoft MVP award, every year since 2007. He is active in the Microsoft community and User Group Leader for CoLabora (a danish UC & Cloud User Group). He works as an Cloud & Infrastructure Architect and Consulent, with primary focus on Exchange, Office 365, Azure and Skype for Business.

12 Comments

  1. can use the same method to Personalize the sharepoint and onedrive URL for Office 365
    Ex-Create a CNAME for sharepoint.contoso.com which points to .sharepoint.com

  2. This worked for us until our domain went https. Now mail.ourdomain.com just throws “NET::ERR_CERT_COMMON_NAME_INVALID,” which I thik relates to HSTS. Is this normal in the case of https?

  3. Hello Peter, is there anyway to actually have the OWA on my site instead of redirecting them to office365?

    Thanks in advance.

  4. I use organisation branding on O365 (Azure). If I create a CNAME from portal.organisation.tld to login/portal.microsoftonline.com, it doesn’t redirect with the ?whr=organisation.tld parameter. Perhaps it’s not meant to work this way, but is there a DNS workaround? DNS is managed by cPanel, so I really don’t want to create a subdomain unless I really have to (all those additional DNS records I don’t need, especially since I’m on O365). Your help is appreciated.

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