Sometimes, Apple Mail starts prompting you for the Gmail password. Sent mail goes to your Outbox and stays there. For some reason Apple Mail loses its send mail configuration. Here's how to fix that.
Google's 2-step verification process is great for protecting your Gmail account and, most likely, a lot of other accounts you have linked to your Gmail account. However, there is a very important second step dealing with Google's Application Specific Password. This tutorial will show you how to configure your iPhone and the Apple Mail client to use the ASP.