FUNJOY  Works great for fast resizing. One added feature request: have the app calculate what the expected file size will be as you are dragging (or, if that's too difficult to program, show the expected file size when dragging/scaling stops).  
(Version 2.0)

TFINDLAY  roro01: ResizeIt and Drag-N-Scale take different approaches to resizing. The main feature of Drag-N-Scale is visual resizing. You don't have to enter any width or height numbers, just resize the window. You don't need to worry about the email feature. There is no fishing going on here although I understand your concern. A future version of Drag-N-Scale will automate this process and use your default mail application.  
(Version 2.0)

RORO01  AVOID THIS APPLICATION!

ResizeIt 2.0.1 size is only 296 KB and it has more features, e.g. saving in different formats, than this application the size of which is about 8 MB. I also didn't like the email feature which require you to put in your mail server details, email address and your password - why that? The email button should simply open your default email application. Something is fishy here.  
(Version 2.0)

TFINDLAY  GUFFIN: Drag-N-Scale is programmed not to increase the size of images since doing so would result in pixelation of the image.   
(Version 2.0)

PHY6  The application cannot handle small images. I have a 40x40 image that I want to rescale to 20x20, but the window cannot even get that small. Also, the application cannot increase the size of images.

For large images, from a digital camera for example, Drag-N-Scale works well. Unfortunately, this is not a general use application.  
(Version 1.0)

MACERIC  Worked nice for resizing.

Couldn't figure out why the name changes I typed were not applied when I saved the new sizes.  
(Version 1.0)

CHIPSTER  Missspelling in Preferences;

"SMPT Address" should read:

"SMTP Address".

Perhaps;

"SMTP Server Address"

would be better?  
(Version 1.0)