Office 365 - Custom Email Addresses in the Domain

Divisions, departments, and organizations will occasionally have need of an email address in the domain. For example, an interdisciplinary project spanning multiple departments may wish to request an email address representing the project without a tie to any single member organization participating in the project (e.g. vs.


Custom addresses in the domain are subject to the following conditions:

  • Custom email addresses may be reserved in the domain for department, organization or division use.
  • Unit leader approval - chair, director, or dean - is required.
  • The email address is an alternate/alias attached to an Office 365 service account used for role-based work; the address will not be attached to an individual person account (
  • The left-hand identifier for the account (before the must be tied to the organization, department, or division requesting the account unless the email address is truly a unique, university-level role or program. The address,, is not an acceptable custom address due to a number of individuals in this role at UW-Madison. The address,, is an example of an acceptable custom address.
  • All requests for custom email addresses are subject to review and approval by the Office 365 Team/Leadership.
  • Custom email addresses that fall outside of the scope of these conditions must be reviewed and approved by the Office of Cybersecurity.

Address Limitations

  • The custom address cannot contain any characters/symbols other than the following: a-z 0-9 . - _.
  • Minimum of three characters. Maximum of fifty characters.
  • Cannot include consecutive special characters:
  • Cannot include symbols on either end:
  • Cannot be existing NetID account: bbadger.
  • The custom address is not a credential and cannot be used to log into O365 or other campus services.
  • The custom address is only supported to work as an email address with Office 365.

Request a Custom Email Address

Contact the DoIT Help Desk with the following information:

  • A brief explanation of the project or initiative for which you are requesting the address.
  • Contact information for the appropriate unit leader - chair, director, or dean. This information will be used to validate the request.
  • The custom address you would like to use.
  • Additional addresses that you find acceptable ranked in order of preference. For example, when requesting, you might also request

See Also:

Keywords:microsoft office365 o365 custom email address wisc policy request role alias account vanity service account netid   Doc ID:51595
Owner:Ara M.Group:Office 365
Created:2015-05-21 13:19 CSTUpdated:2018-08-08 12:38 CST
Sites:DoIT Help Desk, DoIT Tech Store, Office 365, Wisc Account Admin
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