Hillary Clinton speaks at a Digital Content Creators Town Hall on June 28 at the Neuehouse Hollywood in Los Angeles. (Andrew Harnik/AP)

Hillary Clinton raised $68 million in June, the month she became the presumptive Democratic presidential nominee, and heads into the general election with more than $44 million on hand, her campaign reported Friday.

She took in more than $40 million for her own campaign and about $28 million for the Democratic National Committee and state parties.

The monthly total marks Clinton’s best fundraising performance of this election cycle, reflecting both her solidified status as the presumptive nominee and a stepped-up effort to bring in campaign cash to defeat Republican Donald Trump. Clinton has attended a blizzard of high-dollar fundraising parties in the past three weeks, while her campaign sent out urgent pleas for online donations.

Trump has not yet released his fundraising total for June, but it is expected to be well below what Clinton posted. Trump’s campaign sent a text message to supporters Thursday inviting them to “be part of this as we smash our goal. Click here to donate.”

Clinton's campaign began June with more than $42 million on hand, while Trump's campaign had reported $1.3 million. Trump has significantly expanded his fundraising operation since then. He appeared to secure enough delegates to win the GOP nomination weeks before Clinton did the same on the Democratic side in early June.

"Our first month of general election fundraising proved to be the best of the campaign," Clinton campaign manager Robby Mook said in a statement issued by the campaign. "Thanks to the continued support of nearly 1.6 million people, we have been able to help Democrats build out an organizing infrastructure across the country that will mobilize millions of voters and help elect progressive candidates up and down the ballot."

Funds raised through the Hillary Victory Fund, a joint fundraising committee, are going toward political organization, voter registration and volunteer recruitment in numerous states, the Clinton campaign said.