Once this was set up, the number of unread messages appeared beside this list.

WSJ: Review of Cloze: An Email Inbox That Knows Who's Important

In the March raid on Egypt's state security agency, Israa Abdel Fattah, a 32-year-old pro-democracy activist who had been jailed twice in the past three years, was shocked to discover in the agency's files copies of her emails, transcripts of phone calls and text messages, and a list of companies where she had applied for jobs.

WSJ: Mideast Uses Western Tools to Battle the Skype Rebellion

It provides a message list, and you can respond to messages and store them to send later if, perhaps, you don't have a signal.

FORBES: Morphing Cellphones Into BlackBerrys

When an app wants access to data or functions on your phone, such as your contacts list or the ability to send text messages, it can signal potential security or malware risks.

CNN: 'No permission' Android apps can see and share your data

Armed with information about where the messages originated, the FBI is believed to have drawn up a list, as far as was possible, of who was at those locations when messages were sent.

BBC: Email trail helped FBI crack Petraeus case

The services will allow users to perform basic messaging functions such as signing in to and out of the system, sending and receiving messages from buddies, adding new buddies to their list, and finding out who is available online.

CNN: AOL brings instant messenger to mobile phones

Some doctors, of course, do occasionally get bombarded by messages from problematic patients, or end up on an unwanted mass-email list.

WSJ: When Email Is Part of the Doctor's Treatment

Analyzing more than 60 million spam messages linking to 7, 090 sites, MarkMonitor tracked the six most commonly advertised drug brands, a list that the company declines to reveal.

FORBES: Magazine Article