The IRS thinks that they can.

The IRS maintains that its agents can read taxpayers’ emails, texts, and other private electronic communications without a warrant according to a story by Brendan Sasso in The Hill. According to the story, the IRS has maintained that taxpayers “do not have a reasonable expectation of privacy in such communications.”

The report is based on documents acquired in a Freedom of Information Act request filed by the American Civil Liberties Union.

Read the story here:
IRS: We can read emails without warrant

Hat tip: Beau Howard