I'm thinking in making an app that send e-mails without showing the native iOS mail app. For that I'd be using sksmtpmessage framework. I'd like as well to keep sending the e-mail when the app goes in background. According to this thread, it would be doable.
I know that Apple limits a few tasks to be done is the background (Audio, VoIP and location). Then my question is, would Apple reject an app using sksmtpmessage framework to send an e-mail from the background?
Cheers :)