"I think we have to both grow the economy faster and fairer, so we have to do what will actually work in the short term, the medium term and the long term," said Clinton, who is seeking to become the first woman president of the US.
The 69-year-old Democratic front-runner intends to lay out the themes of her economic plan in a speech tomorrow.
"I look forward to the debate about them," she said.
"Everything I did was permitted. There was no law, there was no regulation, there was nothing that did not give me the full authority to decide how I was going to communicate.
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"Previous Secretaries of State have said they did the same thing. And people across the government knew that I used one device. Maybe it was because I am not the most technically capable person and wanted to make it as easy as possible," She told CNN in an interview.
"I chose to turn over 55,000 pages, because I wanted to go above and beyond what was expected of me, because I knew the vast majority of everything that was official already was in the State Department system," she added.
She expressed her disappointment over the comments made by Donald Trump, the Republican presidential candidate, on immigration issues.
"I feel very bad and very disappointed with him and with the Republican Party for not responding immediately and saying: 'Enough. Stop it.' But they are all in the same general area on immigration," she said.
Clinton said she would prefer to have a woman on a USD20 bill rather than the one on the proposed USD10 bill.
"I want a woman on the bill. And I think that it might be easier to change the USD 20 than it is to change the USD10. But we'll see," she said.
The former secretary of state said that this is a competitive campaign.
"I always thought this would be a competitive race. So, I am happy to have a chance to get out and run my campaign as I see fit and let other candidates do exactly the same," she said.