POWER OF ATTORNEY
For Section 16 Compliance

Know all by these presents that the undersigned hereby
constitutes and appoints each of Martin J. Collins, Gregory
Wong, and Natalie Zimmer as the undersigned's true and lawful
attorneys-in-fact, each with the authority to act
independently, to:

(1) execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer and/or director of
QuinStreet, Inc. (the "Company"), Forms 3, 4, and 5 in
accordance with Section 16(a) of the Securities Exchange Act
of 1934 and the rules thereunder;

(2) do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete
and execute any such Form 3,4, or 5, complete and execute any
amendment or amendments thereto, and timely file such form
with the United States Securities and Exchange Commission and
any stock exchange or similar authority; and

(3) take any other action of any type whatsoever in connection
with the foregoing which, in the opinion of such
attorney-in-fact, may be of benefit to, in the best interest
of, or legally required by, the undersigned, it being
understood that the documents executed by such
attorney-in-fact on behalf of the undersigned pursuant to this
Power of Attorney shall be in such form, and shall contain
such terms and conditions as such attorney-in-fact may approve
in such attorney-in-fact's discretion.


The undersigned hereby grants to each such attorney-in-fact
full power and authority to do and perform any and every act
and thing whatsoever requisite, necessary, or proper to be
done in the exercise of any of the rights and powers herein
granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full
power of substitution or revocation, hereby ratifying and
confirming all that each such attorney-in-fact, or each such
attorney-in-fact's substitute or substitutes, shall lawfully
do or cause to be done by virtue of this power of attorney and
the rights and powers herein granted. The undersigned
acknowledges that the foregoing attorneys-in-fact, in serving
in such capacity at the request of the undersigned, is not
assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of
the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3,
4, and 5 with respect to the undersigned's holdings of and
transactions in securities issued by the Company, unless
earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorney-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 28th day of April, 2021.

Signature: /s/ Hillary Smith

Print Name: Hillary Smith