Tumbleweed Communications Corp. and Worldtalk Corporation jointly announced Tumbleweed has entered into a definitive agreement to acquire Worldtalk. With the addition of Worldtalk, Tumbleweed enters the e-mail content filtering space, another rapidly growing sector in messaging. Worldtalk, which introduced its first e-mail content filtering solution in 1997, has grown its 1999 year-to-date revenue for this product family more than 180% over the same period in 1998, from $1.7 million to $4.9 million. Worldtalk’s technologies will enhance Tumbleweed’s Integrated Messaging Exchange (IME) the infrastructure companies use for both business-to-business and business to consumer online communications. When combined with Worldtalk’s WorldSecure e-mail content filtering products, IME enables customers to centrally define and enforce policies that drive new traffic across IME. Upon the completion of the transaction, Worldtalk will become a wholly owned subsidiary of Tumbleweed. Under the terms of the agreement, Worldtalk shareholders will receive a fixed exchange ratio of 0.26 Tumbleweed common shares for each share of Worldtalk common stock. The transaction is expected to close in the first quarter of 2000. www.tumbleweed.com, www.worldtalk.com