Although my university has licensed most of the Mathworks toolboxes, only a few licenses have been issued for some of them. This means that I often need to wait in order to be able to use them. And it is impossible to know when will they be available. So I created a function that sends me an e-mail whenever there are free licenses for a given toolbox. The function is called checklicense; it is hosted in Github and can be downloaded from the MATLAB File Exchange.
Now to receive an e-mail whenever the Image Processing Toolbox is available, the following command can be used in MATLAB: