Respect MP George Galloway said he has had thousands of emails and letters of support, since he appeared before a US Senate committee.
George Galloway plans to publish a book of his election victory.
The former Labour MP travelled to Washington after senators accused him of receiving credit to buy Iraqi oil - an allegation he has always denied.
He said his appearance had turned out to be like a "blessing in disguise".
He was speaking at the launch of a joint publishing venture on Thursday.
Mr Galloway said he had received 15,000 e-mails of support and countless letters since his appearance on 17 May.
Speaking to reporters at the Preem and Priphi restaurant in Brick Lane, east London, he said: "I never considered my name needed clearing. I've had 15,000 e-mails which has got to be some kind of parliamentary record.
"My office is an inch deep in unopened envelopes. My phone has been ringing off the hook.
"My appearance at the Senate has been a bit of a transformation of the situation. As Oscar Wilde said 'sometimes the most bitter trials turn out to be blessings in disguise'."
Mr Galloway denies funds from the sale of Iraqi oil were funnelled through an appeal he set up to help a sick Iraqi girl, but may face an inquiry in the UK.
The former Labour MP was at the restaurant to launch Friction Books, with his friend Ron McKay.
He revealed he also plans to publish a book in the summer called The Battle of Bethnal Green about the campaign that led him to take the Labour safe seat of Bethnal Green and Bow in east London in the General Election.
Mr Galloway said his forthcoming book would "tell a lot of aspects of the story that had not been told yet. It will be a book that burns".
He said he planned to do "nothing at all" now over the Senate's claims, but instead was planning to embark on a speaking tour across the US over the summer.