Contacts:
Becky Yeamans
Juno Online Services
(212) 597-9005
pr@support.juno.com

Jennifer Purcell
Edelman PR Worldwide (for ThinAirApps)
(212) 704-8181
jennifer_purcell@edelman.com

FOR IMMEDIATE RELEASE

ThinAirApps and Juno Develop Wireless Client for Palm VII Handheld

NEW YORK, NY (April 19, 2000) - ThinAirApps LLC and Juno Online Services, Inc. (NASDAQ: JWEB) today announced that they have developed a new version of the Juno client software to run on the Palm VII™ handheld from Palm, Inc. Initially designed to supplement Juno's popular full Web access service by providing wireless access to users' e-mail, the application also lays the foundation for Juno to provide other wireless services in the future. The handheld version of Juno will be available to be downloaded from both the Palm.Net™ and Juno Web sites.

With the ThinAir Server platform hosted on its central computers, Juno becomes one of the first Internet access providers to offer its members direct wireless access through the Palm.Net service. Because of the extensibility and scalability of the ThinAir Server platform and Juno's extensive experience in providing Internet services to consumers, Juno was able to implement a wireless solution in a matter of weeks, rather than the year or more that such major technical projects often take to reach fruition.

"Millions of people have chosen Juno as their way onto the Internet, and our goal is to make sure that we satisfy all their Internet needs," said Toby Bryce, Juno's senior vice president for corporate development. "Our relationship with ThinAirApps is a high-leverage way for us to enter a new market aggressively and roll out new services at Internet speed. If you're on the road or out to dinner, or even if you're just out in the garden, you can now stay in touch through Juno just as if you were sitting at your desktop computer."

ThinAirApps first made a name for itself in the wireless industry after introducing ThinAir, now the most downloaded application on the Palm.Net Web site. Juno's customized application benefits from the experience that ThinAirApps has gained in designing easy-to-use software that is optimized for a Palm handheld, as well as for the transmission speeds of the wireless network being used.

"By enabling a powerhouse like Juno to allow its users to access their accounts anytime and anywhere, ThinAirApps is further demonstrating its commitment to enabling applications that improve people's lives and help them stay more connected to the information they depend on," said Jon Oakes, co-founder and CEO of ThinAirApps. "As we strive to quickly develop solutions that meet the demanding needs of our mobile society, we are fortunate to be working with an innovator like Juno."

About ThinAirApps
ThinAirApps, LLC is a leader in wireless information access software providing the most open platform for extending information to any wireless device. Focused on building applications that reflect the way people live and work in a mobile society, the company is committed to delivering the highest-quality, most affordable products for end users as well as business and service providers. For more information on ThinAirApps LLC, please visit www.thinairapps.com.

About Juno
Juno Online Services, Inc. is a leading provider of Internet-related services to millions of computer users throughout the United States. The company offers several levels of service, ranging from basic dial-up Internet access -- which is provided to the end user for free -- to high-speed broadband access (currently available in selected pilot markets). Juno's revenues are derived primarily from the subscription fees charged for its billable premium services, from the sale of advertising, and from various forms of electronic commerce.

Based on its total of 9.4 million registered subscriber accounts, Juno is currently the world's largest provider of free dial-up Internet services, as well as the second largest provider (after AOL) of dial-up Internet services overall. The company had more than 3.0 million active subscribers during the month of March, including more than 2.3 million active Web-enabled subscribers and approximately 0.7 million who were able to use only Juno's original e-mail service.

For more information about Juno, visit www.juno.com/corp. To get a free copy of the Juno software, go to www.juno.com or call 1-800-TRY-JUNO.

Palm, Palm VII, and Palm.Net are trademarks of Palm, Inc. or its subsidiaries.

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Statements in this press release regarding Juno Online Services, Inc. that are not historical facts are forward-looking statements and are subject to risks and uncertainties that could cause such statements to differ materially from actual future events or results. Any such forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The following factors, among others, could cause Juno's actual results to differ materially from those described in a forward-looking statement: limited history of offering Juno's billable premium services and free basic service in its current form; history of losses; failure to retain or grow Juno's subscriber base; increasing competition from existing or new competitors; inability to sustain current levels of subscriber acquisition or retention; failure of free Web-enabled subscribers to actually make use of the Web and/or limited levels of use by such subscribers; inability to successfully migrate free subscribers to, or to retain subscribers in, Juno's billable premium services; increased telecommunications costs resulting from the expansion of Juno's free basic service; rapid technological change; possible unavailability of financing as and if needed; decreases in the popularity of the Internet among consumers or as an advertising medium; risks associated with the introduction and operation of the wireless service described in this press release; dependence on strategic marketing alliances as a source of revenues; inability to achieve substantial telecommunication cost reductions over time; possible industry consolidation; and potential fluctuations in quarterly and annual results. This list is intended to identify only certain of the principal factors that could cause actual results to differ. Readers are referred to the reports and documents filed by Juno with the Securities and Exchange Commission, including the Annual Report on Form 10-K filed February 15, 2000, for a discussion of these and other important risk factors.