After Mr. de Blasio took office in January 2014, Mr. Rechnitz made a large donation to the Campaign for One New York, a nonprofit group created by the mayor to support his political agenda. In May 2014, Mr. Reichberg hosted a fund-raiser for the group at his home in Brooklyn, attended by Mr. de Blasio, where he raised $35,000.
Later that year, Mr. Rechnitz gave $102,300 to back an effort by Mr. de Blasio to raise money for Democratic state senators in an unsuccessful effort to win control of that body.
The emails start shortly after the inauguration. In February, the mayor invited Mr. Rechnitz to an event, and he replied that he would bring Mr. Reichberg. In March, Mr. Reichberg invited the mayor to a Purim celebration. In June, Mr. Rechnitz invited the mayor to a bris for his newborn son.
On April 1, Mr. Rechnitz wrote to the mayor and said he wanted to recommend a candidate for buildings commissioner.
“I’m all ears, Jona,” Mr. de Blasio wrote back. He included his then chief of staff, Laura Santucci, in the email, and told Mr. Rechnitz to send details to both of them. Later emails included a letter and a résumé from the candidate suggested by Mr. Rechnitz, but the person’s name and other information were blacked out in the documents provided by City Hall.
Eric F. Phillips, a spokesman for the mayor, said that the candidate recommended by Mr. Rechnitz was not Rick D. Chandler, who was appointed buildings commissioner in July 2014. He did not identify the person referred to in the emails.
Mr. Rechnitz and Mr. Reichberg also leveraged their access to Mr. de Blasio for their personal interests.
At one point, Mr. Rechnitz spoke with top officials with the city and the Police Department about the city buying a property he owned in Brooklyn to create a new precinct station house. It is not clear from the emails what happened with that negotiation.
At another point, Mr. Rechnitz asked for help with thousands of dollars in violations levied for using a building he owned on Madison Avenue as an illegal hotel — violations typically associated with improper use of apartments for online home sharing services.
After a series of email exchanges in December 2014, Mr. Rechnitz arranged to meet with Elan Parra, the acting director of the Mayor’s Office of Special Enforcement, the agency responsible for investigating illegal hotel violations. Mr. Rechnitz missed the meeting, and Mr. Parra offered multiple dates to…