Locking Aspect Ratio of exported images (outside of photoshop)

Hello!
I am wondering if there is any way to Lock the Aspect Ratio of an exported image so that the end user cannot resize independently (ie: if used within a document or email etc). Such as a logo that must maintain its ratio to avoid accidental distortion. 

Has anyone seen, or heard of such a thing? I feel like the answer is no - and this is a setting in the end users program (word etc) rather than the responsibility of the designer. But, thought I would check just in case.

Thanks in advance!