iOS SMTP发送邮件开源项目[SKPSMTPMessage]

SKPSMTPMessage 完全不依赖于iOS系统内置的发送邮件程序，可内置于你的应用实现后台发送邮件目的。

Demo效果图：

项目地址：

github地址：https://github.com/huanghuorong/iphone-smtp

googlecode：http://code.google.com/p/skpsmtpmessage/

关键代码：

#pragma mark IBActions- (IBAction)sendMail:(id)sender {    SKPSMTPMessage *test_smtp_message = [[SKPSMTPMessage alloc] init];    test_smtp_message.fromEmail = fromEmail.text;    test_smtp_message.toEmail = toEmail.text;    test_smtp_message.relayHost = relayHost.text;    test_smtp_message.requiresAuth = useAuthSwitch.on;    test_smtp_message.login = login.text;    test_smtp_message.pass = password.text;    test_smtp_message.wantsSecure = SSLSwitch.on; // smtp.gmail.com doesn't work without TLS!    test_smtp_message.subject = subject.text;//    test_smtp_message.bccEmail = @"[e-mail]";        // Only do this for self-signed certs!    // test_smtp_message.validateSSLChain = NO;    test_smtp_message.delegate = self;        NSMutableArray *parts_to_send = [NSMutableArray array];        //If you are not sure how to format your message part, send an email to your self.      //In Mail.app, View > Message> Raw Source to see the raw text that a standard email client will generate.    //This should give you an idea of the proper format and options you need    NSDictionary *plain_text_part = [NSDictionary dictionaryWithObjectsAndKeys:                                     @"text/plain\r\n\tcharset=UTF-8;\r\n\tformat=flowed", kSKPSMTPPartContentTypeKey,                                     [messageBody.text stringByAppendingString:@"\n"], kSKPSMTPPartMessageKey,                                     @"quoted-printable", kSKPSMTPPartContentTransferEncodingKey,                                     nil];    [parts_to_send addObject:plain_text_part];            if (sendVCFSwitch.on)    {        NSString *vcard_path = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"vcf"];        NSData *vcard_data = [NSData dataWithContentsOfFile:vcard_path];        NSDictionary *vcard_part = [NSDictionary dictionaryWithObjectsAndKeys:                                    @"text/directory;\r\n\tx-unix-mode=0644;\r\n\tname=\"test.vcf\"",kSKPSMTPPartContentTypeKey,                                    @"attachment;\r\n\tfilename=\"test.vcf\"",kSKPSMTPPartContentDispositionKey,                                    [vcard_data encodeBase64ForData],kSKPSMTPPartMessageKey,                                    @"base64",kSKPSMTPPartContentTransferEncodingKey,nil];        [parts_to_send addObject:vcard_part];    }    if (sendImageSwitch.on)    {        NSString *image_path = [[NSBundle mainBundle] pathForResource:@"Success" ofType:@"png"];        NSData *image_data = [NSData dataWithContentsOfFile:image_path];                NSDictionary *image_part = [NSDictionary dictionaryWithObjectsAndKeys:                                    @"inline;\r\n\tfilename=\"Success.png\"",kSKPSMTPPartContentDispositionKey,                                    @"base64",kSKPSMTPPartContentTransferEncodingKey,                                    @"image/png;\r\n\tname=Success.png;\r\n\tx-unix-mode=0666",kSKPSMTPPartContentTypeKey,                                    [image_data encodeWrappedBase64ForData],kSKPSMTPPartMessageKey,                                    nil];        [parts_to_send addObject:image_part];    }    NSDictionary *sig_text_part = [NSDictionary dictionaryWithObjectsAndKeys:                                     @"text/plain\r\n\tcharset=UTF-8;\r\n\tformat=flowed", kSKPSMTPPartContentTypeKey,                                     [@"\n" stringByAppendingString:sig.text], kSKPSMTPPartMessageKey,                                     @"quoted-printable", kSKPSMTPPartContentTransferEncodingKey,                                     nil];    [parts_to_send addObject:sig_text_part];        test_smtp_message.parts = parts_to_send;        Spinner.hidden = NO;    [Spinner startAnimating];    ProgressBar.hidden = NO;    HighestState = 0;        [test_smtp_message send];}

参考：IOS开发中发送Email的两种方法

http://blog.sina.com.cn/s/blog_94d94f1a01016rgc.html