I recently changed my email blast code which then began creating gaps in between images in a table, however, the problem only seemed to be in Gmail. Everything else looked ok.
The fix was easy. I just had to add style="display:block" to the image tag. And it was good to go!
I took the tip from this site: http://www.nurulam.in/2010/06/email-newsletter-extra-table-row-gap-in-gmail/
Thought I would share just in case someone else needed to know.
