Another important change demanded by my beta-testers was support for 8-bit MIME (Multipurpose Internet Mail Extensions) operation.

我的公测人员要求加入的另一个重要功能是支持8位的MIME (Multipurpose Internet Mail Extensions，多用途的网际邮件扩充协议)操作。

youdao

Gmail, its hugely successful E-mail system, was released to the world in beta (ie, testing) mode and stayed that way for years.

一款获得了巨大成功的电子邮件系统，以测试版的形式发布，并且将这个标签保留了多年。

youdao

Tools such as Google Chat and Google Mail are beta products, requiring users to give feedback on problems and suggestions.

BBC: Google is the world's dominant search engine

Apple touted the service's ability to recognize when you're messaging someone else eligible for iMessages, but it appears to be limited to e-mail addresses at this point in the BETA. Delivery confirmation is turned on by default, but those of you who don't like the thrill of the chase will be happy to learn that there's an option to disable read receipts.

ENGADGET: Apple iOS 5 hands-on preview

The Seattle, Washington-based company is asking developers to submit an e-mail address to be notified when a "limited beta" of the Kindle Development Kit starts next month.

FORBES: Stopping Apple: Can Amazon Find An App For That?