All files on mockupyourmind.com have a standard Royalty Free license, which means that they can be used in commercial and private projects. They can be used digitally (Internet, banners, private or company portfolio, etc.), in a printed format (advertisement, flyer, banner, etc.), and on television and in other mass media.
The files downloaded from mockupyourmind.com cannot be distributed or sold as PSD files (or in any other editable format that is available). The mockup files may not be distributed on any other sites except mockupyourmind.com. This applies to modified and unmodified files. Mockups cannot be separated from this license.
It is not required to credit mockupyourmind.com when using these mockups. However, including a link to mockupyourmind.com or the hashtag #mockupyourmind is greatly appreciated.