EXHIBIT 23.1 The Board of Directors Kana Communications, Inc. We consent to the incorporation by reference herein of our reports dated January 20, 2000, except as to Note 8, which is as of February 11, 2000, with respect to the consolidated balance sheets of Kana Communications, Inc. and subsidiaries as of December 31, 1999 and 1998, and the related consolidated statements of operations and comprehensive loss, stockholders' equity, and cash flows for each of the years in the three-year period ended December 31, 1999, and the related financial statement schedule, which reports appear in the December 31, 1999, Form 10-K/A of Kana Communications, Inc. We also consent to the reference to our firm under the heading "Experts" in this registration statement. /s/ KPMG LLP Mountain View, California January 26, 2001