Active corporate e-mail accounts worldwide:
2009: 568 million
2010: 597 million
2011: 626 million
2012: 657 million
2013: 691 million

Storage requirements for e-mail will also continue to grow.

Average number of corporate messages sent/received per day per user:
2009: 167
2010: 179
2011: 192
2012: 205
2013: 219

Average storage per corporate user per day:
2009: 20.3M
2010: 22.3M
2011: 25.0M
2012: 27.6M
2013: 30.8M

Source: Radicati Group

The Radicati Group also expect the email archiving market to grow from $800 million in 2006 to nearly $7.8 billion in 2010. The wireless email market is forecasted to grow from 14 million in 2006, to 228 million in 2010. And revenues in the Enterprise Instant Messaging market will increase at an average annual rate of 23% over the next four years.

Part of the solution is a change from push communication technology to pull communication technology.  Many email senders include everyone the sender can think of in a CYA attempt to not miss someone who could be perceived as a critical or not-so-critical participant.  Often, the information pushed to these people is not important to them and they summarily delete them.  None-the-less, these emails must be stored by the company as a protection against potential eDiscovery due to future possible legal actions.

By using pull communication technology only one iteration of the communication is stored and maintained.  All those who need to see what was posted will pursue reading that communication.  In addition, storage costs and possible eDiscovery costs are reduced accordingly.  Further, there is little to no possibility for misdirected email, information leaks are reduced and communication’s purpose to enlighten and inform where needed is improved.