Even in 2011, email delivery can suffer from slow performance, especially in branch offices. Despite optimizations in Outlook and Exchange, and protocol improvements in MAPI, remote users can still experience performance problems caused by WAN latency and bandwidth limitations.

Blue Coat ProxySG Acceleration Edition solves these performance issues with Microsoft email applications by:

• Applying byte caching and compression technologies to reduce redundant data and attachments.
• Batching and pre-population to deliver a “LAN-like” experience when downloading email.
• Classifying and prioritizing traffic to ensure email applications always have sufficient bandwidth to perform at top speed.

In fact, one study with Microsoft Outlook and Exchange tested email delivery over a WAN link of 1.544 Mbps (T1) with 100ms latency. The results showed Blue Coat ProxySG appliances accelerated email delivery more than 24 times, even with a 5MB attachment sent to multiple addresses.