Xcode 4 / iOS - 从我的应用程序内部使用SMTP发送电子邮件

I've been looking around for a framework to simply allow me to send an email from inside my app. I have tried MailCore, Pantomime and SKPSMTP all with no luck. I can't get them to compile in Xcode, so I presumed they were outdated. Is there any way I can do this? If so, how? Thanks.I've been looking around for a framework to sim