初级帐户有20条免费短信提醒，商务帐户有200条免费短信提醒。
The basic account also comes with 20 free SMS alerts, while business account users can receive up to 200 alerts by text message.
免费服务还包括每月20条短信提醒，考虑到用户可能想即时查看网站或服务器的下线时间，这项业务还是很划算的。
This free account also comes with up to 20 SMS alerts per months, which is a nice perk, given that you probably want to know that your site or server is down as soon as possible.
巧合的是，在这个周一，英国移动运营商O2宣布，他们已经与Twitter达成协议，允许用户免费接收twitter的短信提醒。
Coincidentally, UK mobile operator O2 said Monday that it has forged an agreement with Twitter allowing users to receive free SMS alerts from Twitter.
面临的挑战包括资助呼叫中心、分配免费的家庭艾滋病毒检测，和提醒病人注意治疗预约的短信提示的到位。
Challenges include funding call centers, distributing free home HIV tests, and putting in place text messaging to remind patients of their medical appointments.
用户可以订阅这些免费的短信提醒通过链接在这里。
Users can subscribe to these free SMS alerts via the link here.
用户可以订阅这些免费的短信提醒通过链接在这里。
Users can subscribe to these free SMS alerts via the link here.
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