Hillary Clinton extended warm welcomes to executives from companies that had donated to the Clinton Foundation, new emails from her first year as secretary show.

Her frequent interactions with firms that had given generously to her family philanthropy — many of which were lobbying the State Department at the same time — raise questions about whether she used her diplomatic perch to help certain companies get ahead.

For example, in September of 2009, Clinton asked aides to help the Blackstone Group secure a requested visa.

Blackstone donated between $250,000 and $500,000 to the Clinton Foundation, donor records show.

Clinton indicated in the email that several Blackstone executives had approached her chief of staff, Cheryl Mills, to inquire about the visa.

In the same message, Clinton pressed aides about helping another foundation donor, Honeywell, increase its sales by easing export controls that "interfere" with profits.

She noted David Cote, the CEO of Honeywell, had personally requested assistance, but the exact favor he asked of Clinton was redacted by the State Department.

Honeywell not only gave to the Clinton Foundation and officially lobbied the State Department, it contributed heavily to a political project dear to the secretary: the U.S. pavilion at the 2010 World's Fair in Shanghai.

Clinton welcomed intelligence on the Chinese economy from a top executive at Morgan Stanley, another Clinton Foundation donor, in July of that year.

"Delighted to hear from and about you," Clinton wrote to Stephen Roach, chair of Morgan Stanley Asia, in response to his lengthy memo on China's economic struggles.

"Your timing is impeccable since I will be co-chairing w Tim Geithner [then Treasury Secretary] the first Strategic and Economic Dialogue w the Chinese on July 27-28 in DC. So if you have any thoughts you want to share before our meeting, pls pass them on," she added.

The secretary told Roach she was "looking forward" to meeting him when he was in Washington, D.C.

Morgan Stanley has donated between $100,000 and $500,000 to the Clinton Foundation.

Clinton received a note in April from Dave Stone, who had recently accepted a senior position at Cisco that would give him authority over Asia, the Middle East and Africa.

Stone asked to meet with Clinton about his new role, which he described as promoting "the use of the Network to improve the quality of life of Millions of people in areas such as Education, Health Care and Security."

Clinton forwarded the message from what appears to be a private email address she used as a senator to one of her aides and demanded Stone be put on her schedule for a meeting.

Cisco has donated between $1 million and $5 million to the Clinton Foundation.

The Silicon Valley giant was nominated that same year for a prestigious State Department award, the Secretary's Award for Corporate Excellence, for its work in Lebanon, which fell under Stone's purview.

Cisco won the award the next year.

Jake Sullivan, Clinton's deputy chief of staff, signed off on security clearances for top Boeing executive Stanley Roth so he could travel with a presidential delegation to Mongolia.

Boeing has donated between $1 million and $5 million to the Clinton Foundation, including a $900,000 contribution given shortly after Clinton lobbied the Russian government to award the aerospace conglomerate a lucrative contract.

Boeing's relationship with the State Department fell under scrutiny earlier this year when multiple news outlets noted that the perks it received from the State Department lined up neatly with the firm's financial support of Clinton causes.

Elizabeth Bagley, Clinton's special representative for global partnerships, touted a $5 million donation from Chevron to the U.S. pavilion at the 2010 World's Fair in Shanghai in a July email.

Bagley credited Clinton for securing the donation and wondered if the effort would "entice the press to do a story now on her leadership."

A longtime Clinton supporter and ambassador to Portugal under President Bill Clinton, Bagley gave between $1 million and $5 million to the Clinton Foundation and $5,000 to Ready for Hillary, foundation records and OpenSecrets.org show.

Chevron was also a major Clinton Foundation donor, giving between $500,000 and $1 million to the charity.

The oil giant's interactions with the State Department under Clinton went far beyond its sponsorship of the Shanghai pavilion, which was a priority of Clinton's during her first years as secretary.

She and her aides tapped the same corporate donor network that has kept the foundation alive to sponsor the pavilion.

Chevron spent $20.8 million on lobbying in 2009 alone, including on its efforts to lobby the State Department.

The company had several interests before the agency at the time, including a potentially devastating environmental case in Ecuador and Chevron's reported push to secure fracking concessions around the globe.

Mills weighed an invitation from Goldman Sachs executives for Clinton to attend a "climate investing" conference in Copenhagen, a June email shows.

"Thank you so much for considering this invitation. I am sure the sponsors would be absolutely thrilled to have Secretary Clinton appear," wrote Dick Gephardt, a former Democratic House majority leader and lobbyist for Goldman Sachs, in an email to Mills.

Gephardt then praised the secretary for her "skill and grace" in a message that followed a Goldman executive's lengthy plea to bring Clinton on as the keynote speaker at the event.

"Let's discuss at our next meeting," Clinton wrote to an aide of the invitation.

Goldman Sachs has donated between $1 million and $5 million to the Clinton Foundation.

The financial firm also poured money into the "Secretary's International Fund for Women and Girls," another of Clinton's personal projects, in 2010.

Although precluded by ethics rules from paying Clinton for such speeches while she was secretary, Goldman Sachs began cutting huge checks to Clinton in exchange for appearances at events after she left the State Department.

In October, Caitlin Klevorick highlighted the success of a policy video Clinton had made by noting that Pepsi, a foundation donor, had shown the video in an internal meeting and planned to promote it at an upcoming conference.

Klevorick was one of several Clinton aides who was granted a "special government employee" status that allowed her to collect paychecks from a private company and the State Department at the same time, according to Pro Publica.

She said the Clinton Global Initiative, an arm of the Clinton Foundation, had "gotten feedback about the video" as well.

Klevorick worked both as a consultant for the Clinton Foundation and in Mills' office that year, according to her professional biography.

Pepsi also donated $5 million to the Shanghai pavilion, emails sent in June said.

The newly-released emails were sent and received in March-December 2009, the first year of Clinton's time as secretary of state.

The agency's decision to refrain from publishing the emails until 9 p.m. Tuesday evening despite having known of its legal requirement to release them for more than a month sparked outrage among journalists and transparency advocates who saw the move as an effort to minimize critical coverage of the records.

Clinton's use of a private email and server to house her government communications has been a lightning rod for critics since the House Select Committee on Benghazi revealed the account in March.

Scrutiny reached new levels last week after a Benghazi witness and former Clinton aide, Sidney Blumenthal, provided dozens of emails that State had never disclosed.

The new records raised questions as to whether Clinton submitted all of her work-related emails, as she has claimed to have done.

After the State Department admitted it could not find all or part of 15 communications, critics began calling for an investigation of the physical server on which the emails were located.

The State Department was forced to begin publishing emails on a rolling basis after Vice News sued the agency in January over its neglected Freedom of Information Act request for the records.

A judge ordered State officials to publish chunks of the emails each month, setting specific targets for the number of records that would be released at each milestone until the deadline of January 29, 2016, arrived.

Vice's legal team argued in court documents filed May 27 that the agency should be forced to produce documents more frequently due to the volume of the emails, the intense public interest in them and "the fact that the records pertain to a declared presidential candidate participating in an election process in which caucusing begins on February 1, 2016."

The court order required State to publish 7 percent of the 55,000 pages of emails Clinton submitted to the agency in November of last year.

Because the State Department published more than 800 pages of Benghazi-related emails last month, officials released just 3,000 pages — or roughly 5 percent — of the Clinton email cache late Tuesday evening.