Through the Show
Cramer takes live calls as host of CNBC's "Mad Money" and email questions and comments through the station. The show is carried live at 5 p.m. Eastern Time weekdays. The call-in number is 1-800-743-CNBC. Cramer's company email address is firstname.lastname@example.org.
Facebook, LinkedIn and Google+
Cramer maintains an official fan page on Facebook where users can add comments to his posts. The site makes no promise that Cramer will personally respond. In addition, for registered Facebook users, Mad Money's Facebook page contains a link to an application to contact Cramer. Cramer may also respond to commends left from participants in the Google+ community that follow his posts there. Registered users of LinkedIn can reach him there through his profile on that site.
RealMoney and TheStreet
Cramer's TheStreet, the website he founded in 1996 aimed at investors, has a contact link to him through an email form. It's available to logged in users who have previously verified an email address through the website. RealMoney.com users can also access an email form.
Twitter users can contact Cramer either through the Mad Money page or his official individual page. The pertinent user names are @MadMoneyonCNBC and @jimcramer.