Highlight what text you want to keep. Then click "reply all" or whatever is applicable. Gmail should trim the rest. Same thing on smart phones like the iPhone. Just did it to your email.

BenT
sent from my electronic leash

> On Mar 13, 2015, at 5:39 PM, Ryan Perry <rjdperry@GMAIL.COM> wrote:
> 
> And sorry if this email isn't trimmed,
> I'm using inbox from google and don't see the option ☺