Gmail converts this:
<td style=“height: 20px;â€>td>
To this:
<td style=“min-height: 20px;â€>td>
The min-height property does not have the same effect as the “height†property in TDs. This seems to have a universal effect in all browsers. By adding a or a
inside the empty cell, it resolves the problem.
<td style=“min-height: 20px;â€> td>