Walker released the e-mails on Friday after The Associated Press and the Madison weekly newspaper Isthmus filed a lawsuit seeking them. Both news organizations submitted open record requests for the e-mails in February, but got no response for two weeks.
The AP and Isthmus reached a settlement with Walker on Wednesday calling for the governor to release the messages and pay attorney fees.
The agreement specified that Walker did not acknowledge violating the state's open records law.
Walker signed the collective bargaining legislation into law last week following a month of protests that brought as many as 85,000 people to the Capitol.