Weapon and mail issue

Hello,

My in game name is <Purple> a shaman on Alliance side on the Outland server.
I was using the serves of dual spec switching from Enhancement to Resto, and I got my Off hand weapon sent to me through the game mail.
I mistakenly clicked on "Return mail" instead of picking up the weapon.
The weapon was [Mounting Vengeance] from SWP trash and was gemed with two red gems of strength and it had Mangoose enchantment.

Could there be any chance to get the weapon back? it was really an honest mistake.

Thanks,and much appreciation.

I just got the mail back with the weapon, thanks <3