Most BlackBerry phones have a flashing light that blinks when an e-mail comes in, and a built-in option to filter alerts so that you only receive them from contacts you prioritise.

BBC: Managing e-mail while on the road

Last week, Microsoft added a full-session security option to Hotmail, its e-mail service.

CNN: Why Google's data collection snafu could be good for Gmail

Mrs James's e-mail said her son felt he had no option other than to travel to the clinic.

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One unfortunate aspect of the app is that there is no option to share outfits and solicit votes on other platforms, like e-mail and Twitter, which greatly hampers the potential virality of the campaign.

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"Patients can speak to their pharmacist about the option of having the pharmacy compound Tamiflu capsules into a liquid, " DeAngelis said in an e-mail.

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