Donald Trump marked a new era in his campaign on Tuesday, responding to a major economic policy speech by Hillary Clinton with detailed rapid response emails in addition to his hard-hitting tweets.

Trump has been under mounting pressure in recent weeks to turn his existing one-woman communications team into a serious operation by hiring additional staffers to handle media requests, disseminate messages to campaign surrogates and quickly respond to attacks leveled by Clinton. The latter appeared to be a work in progress on Tuesday.