Update approval/review emails to they don't get [Message clipped] in Gmail

We have just enabled Adobe storage and frame.io for approvals/reviews. we have noticed quite a few oddities, but one that should be easily fixable is changing the email that gets sent out to approver/reviewers. 

We noticed that when sending to gmail, and probably other services, the email displays very large:

Hi ____,
 
_________ wants you to review the following for approval:

[Message clipped]  View entire message

This is not a great experience for the reviewer and forces them to click the link to actually get to the review link.

According to a search, gmail does this for messages over ~100kb in size. I downloaded my email and it was ~300kb.  

It seems like an easy change to modify these emails so they display properly.