I\'m sending an email from MS Outlook (2013) and it\'s working perfectly, but in the GMail app for Android (it also happens for iOS) there is a gap between lines (rows).
This is the best I can get and I will follow this approach unless someone comes up with a better solution:
Gmail APP issue
TABLE CELL 1
TABLE CELL 2
What we are doing is removing the inline style from the p element, adding the MsoNormal class and applying the margin in the tag.
MS Outlook will take that margin and will inline it in the element, so Gmail / Gmail app will finally receive the margin set :)
Notice that we are setting a 0.1px margin, otherwise Outlook won't inline it in the element.
Remember that some email clients don't recognize the style tag and some others don't apply the css from classes, so we should set margin: 0.1px
in the p element as an inline style