President Joe Biden sent or received about 82,000 pages worth of emails through pseudonymous email accounts while serving as vice president, the National Archives and Records Administration (NARA) disclosed.
The disclosure came as a result of a Freedom of Information Act (FOIA) lawsuit brought by the conservative Southeastern Legal Foundation (SLF) against NARA.
The National Archives' filing revealed that the emails spanned all eight years of Biden's vice presidency under then President Barack Obama, and included messages to or from three shadow email addresses: "robinware456@gmail.com," "JRBWare@gmail.com" and "Robert.L.Peters@pci.gov," the New York Post reported.
"The fact that as vice president, Joe Biden sent 82,000 pages of emails from alias email addresses, is shocking," SLF General Counsel Kimberly Hermann told the Post.
"The American public has a right to know what is in those emails. SLF remains hopeful that now that we have confirmed that the emails exist, NARA will fulfill its legal obligation and produce them in a timely and transparent manner."
Emails found on Hunter Biden's now-infamous laptop showed that the current president used a series of pseudonyms on emails that were about official and family business.
Monday's disclosure is the first time the sheer volume of the correspondence has been revealed, DailyMail.com reported.
The roughly 82,000 emails well surpass the 33,000 emails former Secretary of State Hillary Clinton deleted off of her personal server.
"NARA has completed a search for potentially responsive documents and is currently processing those documents for the purpose of producing non-exempt portions of any responsive records on a monthly rolling basis," said the filing states, which also said that due to the "scope" of FOIA request, "the volume of potentially responsive records is necessarily large."
"NARA has identified approximately 82,000 pages of potentially responsive documents, and it is currently processing those documents and preparing any non-exempt responsive documents for production on a rolling basis," the filing stated.
House Republicans on the Committee on Oversight and Accountability are seeking unredacted emails that relate to Ukraine and natural gas company Burisma during their probe of Biden's alleged influence peddling in his family's foreign business dealings.
Earlier this month, America First Legal revealed from its FOIA request that then-Vice President Biden emailed his brother and his son about foreign business dealings more than 29,000 times.
The president has insisted that he had no knowledge of his family's foreign business dealings.