NTT DoCoMo Sets Daily E-mail Limit as Part of Ongoing Measures to Counter Spam

Products & Services

TOKYO, JAPAN, August 21, 2003 --- NTT DoCoMo, Inc. and its eight regional subsidiaries announced today that the companies will limit the number of e-mail users can send to 1,000 messages per day, beginning October 20, 2003. The move is part of the company's ongoing efforts to counter the growing amount of spam mail being sent via the i-mode network.

Acting under the assumption that most users who send more than 1,000 messages per day are spammers, the new measure is designed to block those who send massive amounts of mail from i-mode handsets.

DoCoMo has been taking various other steps to eliminate spam mail. Recently, the company began suspending or rescinding spammers' subscriptions for all registered handsets in response to the increasing number of spam mail individual subscribers receive from mobile phones. As of August 19, DoCoMo had suspended contracts with 602 subscribers that the company identified as spammers.

DoCoMo is committed to protecting the convenience and usefulness of mobile internet services for all customers, and will aggressively pursue effective anti-spam measures.

In line with official requirement, DoCoMo notified Ministry of Public Management, Home Affairs, Post and Telecommunication of the change in its service clause.

About NTT DoCoMo
NTT DoCoMo is the world's leading mobile communications company with more than 46 million customers. The company provides a wide variety of leading-edge mobile multimedia services. These include , the world's most popular mobile internet service, which provides e-mail and internet access to over
39 million subscribers, and , launched in 2001 as the world's first 3G mobile service based on W-CDMA. In addition to wholly owned subsidiaries in Europe and North and South America, the company is expanding its global reach through strategic alliances with mobile and multimedia service providers in the Asia-Pacific, Europe and North and South America. NTT DoCoMo is listed on the Tokyo (9437), London (NDCM), and New York (DCM) stock exchanges. For more information, visit

i-mode and FOMA are trademarks or registered trademarks of NTT DoCoMo, Inc. in Japan and other countries.

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