When you use G-Mail on the Apple iPhone, any time you send an email message to someone (from your iPhone or from your main computer), the message shows up as a new email message in your Inbox. You might say that this is a feature, well it is the default behavior anyway. To stop this behavior, from the Home screen on your Apple iPhone:
- Select Settings
- Select Mail
- Select the Account in question (your G-Mail account)
- Select the "Advanced" option
- Turn the "Use Recent Mode" feature Off.
- That's it! :)