Although it is a common practice, emailing mockups as JPEGs is not really the best way to put your job across to clients. There are more professional ways to get the job done. And I am sure you will get to see it if you try this service out just once.
Prevuu is a solution that web designers can use to unify all the different images that make up any mockup they have created, and have that presented to the client instead. And not only are all the files grouped together in a way that ensures nobody is seeing them out of order, they also become branded. Any person who happens to stumble upon your files will know that it was you who put them together. And everything is viewable on a web browser, too. There is just no software to download or install.
Prevuu, then, lets designers assemble their work in a truly professional way and ensure they will be causing the right impression on these clients who have hired them for the first time.
Prevuu.com In Their Own Words
A better way to view screen designs.
Why Prevuu.com It Might Be A Killer
Designers will just jump at the chance to present their work so professionally with so little effort.
Some Questions About Prevuu.com
In which other contexts could this technology be used? 
