EXHIBIT 32.1

 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K of j2 Global, Inc. (the “Company”) for the year ended December 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Vivek Shah, as Chief Executive Officer (Principal Executive Officer) of the Company, and R. Scott Turicchi, as Chief Financial Officer (Principal Financial Officer) of the Company, each hereby certifies, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, to the best of his knowledge, respectively, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:	March 1, 2019	By:	/s/ VIVEK SHAH
			Vivek Shah
			Chief Executive Officer (Principal Executive Officer)

Dated:	March 1, 2019	By:	/s/ R. SCOTT TURICCHI
			R. Scott Turicchi
			Chief Financial Officer (Principal Financial Officer)

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to j2 Global, Inc. and will be retained by j2 Global, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.