Duplicate sent emails driving me crazy !! HELP!!!

[joygirlx105]

:icon_evil: I have eris. I use gmail using mail application. Not gmail app. (So that I can copy and paste).

But everytime I reply using my eris, when I check email on my laptop, i get two sent emails!!! It's driving me crazy.

Please help:greendroid::heart::blackdroid:

Regards,
Joy