How to send email from iPhone app without user interface

问题

I want my app to be able to send an email with attachment to a hard-coded recipient with no user input required, unlike the MessageUI framework.

Is there any way to do this? Any example code would be appreciated.

Thanks in advance.

回答1:

As Saurabh said, there is no low level mail library. I would look for an SMTP library, rather than an IMAP one, because you don't need to get mail, just sent it.

Attachments can be done with MFMailComposeViewController's via -(void)addAttachmentData:(NSData *)attachment mimeType:(NSString *)mimeType fileName:(NSString *)filename

Which I believe simply base64 encodes the data, and attached a mime type header and footer.

Check out this question for lots on the topic: Open Source Cocoa/Cocoa-Touch POP3/SMTP library?

回答2:

Apple doesn't give you a way to do this. You'll have to write your own IMAP library or use a 3rd-party library (Mailcore is good).

来源：https://stackoverflow.com/questions/2080278/how-to-send-email-from-iphone-app-without-user-interface