STAPLES Business Depot Selects Unica's Affinium to Help Make Precision Marketing ''Easy''

Business Wire, May 16, 2006

WALTHAM, Mass. -- Unica(R) Corporation (Nasdaq:UNCA), a global provider of Enterprise Marketing Management (EMM) solutions, today announced STAPLES Business Depot, Canada's leader in office supplies, has chosen Unica's Affinium software to increase its marketing velocity and efficiency and develop more targeted campaigns to its customer base of small businesses and home office customers.

"STAPLES Business Depot is strongly committed to making the shopping experience easy for our customers. To support this mission, we have a marketing imperative to deliver relevant messages and offers to customers at just the right time," said Caroline Quinn, director of direct marketing for STAPLES Business Depot. "We expect Affinium will help us get to market in an intelligent, customer-focused manner, with a more personalized approach across multiple touch points and channels."

STAPLES Business Depot will use Affinium to coordinate its marketing campaign efforts across channels including e-mail, direct mail, telemarketing, and catalogue. Affinium was selected based on its ease-of-use, breadth of capabilities, and track record of customer success at leading retail companies.

Sarah Vickers, manager of marketing analytics for STAPLES Business Depot explains, "We look forward to using Affinium to help streamline our processes so we can spend less time executing our marketing programs and more time strategically using analytics for customer-focused initiatives."

About Unica

Unica(R) Corporation is a leading global provider of EMM software designed to help businesses increase their revenues and improve the efficiency and measurability of their marketing operations. Unica focuses exclusively on the needs of marketing organizations and its Affinium(R) software addresses the principal functions of EMM including marketing and customer analytics, demand generation and marketing resource management. More than 400 companies in a wide range of industries use Unica software to manage the complexities and processes of marketing and to facilitate the operations of a customer-centric business. Unica's customers include ABN AMRO, Capital One, Choice Hotels, Comcast, Lands' End, Nordstrom, Reader's Digest, Scotiabank and Vodafone. Unica has offices across the United States, including its corporate headquarters in Waltham, Massachusetts, as well offices in the United Kingdom, France, Germany, Singapore and India. For more information, call 781-839-8000 or visit http://www.unica.com.

About STAPLES Business Depot

The Business Depot Ltd. was founded in Toronto in 1991. It is Canada's largest supplier of office supplies, business machines, office furniture and business services for the small business and home office customer. The company is an everyday low price retailer. The chain operates stores in all provinces across Canada under the banners STAPLES (R) Business Depot(TM) and BUREAU EN GROS(TM). The company has over 11,500 employees serving customers through more than 260 office superstores, catalogue, and e-commerce. STAPLES (R) Business Depot(TM)/BUREAU EN GROS(TM) is committed to making shopping easy by offering customers three ways to shop - on-line, by catalogue and in-store. More information is available at www.staples.ca.

About Staples

Staples, Inc. invented the office superstore concept in 1986 and today is the world's largest office products company. With 69,000 talented associates, the company is committed to making it easy to buy a wide range of office products, including supplies, technology, furniture, and business services. With 2005 sales of $16.1 billion, Staples serves consumers and businesses ranging from home-based businesses to Fortune 500 companies in 21 countries throughout North and South America, Europe and Asia. Headquartered outside of Boston, Staples operates approximately 1,780 office superstores and also serves its customers through mail order catalog, e-commerce and contract businesses. More information is available at www.staples.com.

Copyright 2006 Unica Corporation. Unica, the Unica logo and Affinium are registered trademarks of Unica Corporation. All other product names, service marks, and trademarks mentioned herein are trademarks of their respective owners.

Forward-looking Statements

The information provided in this press release above contains forward-looking statements that relate to future events and future financial performance of Unica. These forward-looking statements are based upon Unica's historical performance and its current plans, estimates and expectations and are not a representation that such plans, estimates, or expectations will be achieved. These forward-looking statements represent Unica's expectations as of the date of this press announcement. Subsequent events may cause these expectations to change, and Unica disclaims any obligation to update or revise the forward-looking statements in the future. Matters subject to forward-looking statements involve known and unknown risks and uncertainties, including volatility of our stock price due to the difficulty in predicting operating results and the long sales cycle for Unica's software; failure by Unica to develop new software products and enhance existing products; failure to retain key staff; failure by Unica to maintain historical maintenance renewal rates; the potential that the Unica software will not help customer streamline its processes or spend less time executing its marketing programs; and failure to properly protect Unica's proprietary rights and intellectual property. These and other factors listed in the Annual Report on Form 10K for the fiscal year ended September 30, 2005 under "Risk Factors" could cause Unica's performance or achievements to be materially different from those expressed or implied by the forward-looking statements.