Endurance International 10-K 2018 FY Annual report

Exhibit 32.1

CERTIFICATION 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 Endurance International Group Holdings, Inc. for the period ended December 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Jeffrey H. Fox, Chief Executive Officer of Endurance International Group Holdings, Inc., hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge on the date hereof:

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

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Endurance International Group Holdings, Inc.

Date: February 21, 2019	By:	/s/ Jeffrey H. Fox
		Jeffrey H. Fox Chief Executive Officer (Principal Executive Officer)