By: Alexandra Bruell, AdvertisingAge

The U.S. Postal Service has selected Interpublic Group of Cos’ UM as its media agency, Ad Age has learned.

A USPS spokeswoman confirmed the UM appointment but declined to provide additional details at this time. Campbell-Ewald and UM didn’t immediately respond to a request for comment.

The selection follows a full-service review that began over a year ago. After the initial stages of the review, the government agency halted the process to reevaluate its needs. In a change of course, it also split the initial request for proposal into two briefs — one for creative and one for media. The new search began this fall. The results of the media review came before the conclusion of the creative review, which is expected to wrap up in the first quarter of 2013, industry executives said.