I've had a pretty great experience updating our email templates to be super responsive and flexible. I'm running into one weird thing on desktop versions of Gmail that has me scratching my head.

The giant white sidebar never shrinks (even thought it's empty!) and eventually crashes into my message content. Not sure what's going on here.

Wide Sidebar

This td.y3 seems to be the issue (it's within Gmail, not my code). Anyone seen this before or know where to start?


The table.Bs (which is a parent of td.y3) behaves differently in my email than an email from, say, Twitter. In a Twitter email, the width of table.Bs maxes out at 980px. On mine, it shrinks.

Any help greatly appreciated. Thanks!