這個庫比較老舊，使用MRC手動記憶體管理(如下),當然也可以用pod直接匯入，而且省事方便

引入標頭檔案

#import "SKPSMTPMessage.h"

#import "NSData+Base64Additions.h"

遵循代理  SKPSMTPMessageDelegate

-(void)sendEmail{

SKPSMTPMessage *testMsg = [[SKPSMTPMessagealloc] init];

    //傳送郵箱

    testMsg.fromEmail =@"[email protected]";

    //收件郵箱

    testMsg.toEmail =@"[email protected]";

    testMsg.relayHost =@"mail.hi-service.cn";

    testMsg.requiresAuth =YES;

    //傳送郵箱

    testMsg.login =@"[email protected]";

    //傳送郵箱密碼

    testMsg.pass =@"********";

    testMsg.wantsSecure =YES;

    testMsg.delegate =self;

    //主題

    testMsg.

    //內容

NSDictionary *plainPart = [NSDictionarydictionaryWithObjectsAndKeys:@"text/plain",kSKPSMTPPartContentTypeKey,[NSStringstringWithCString:"測試正文"encoding:NSUTF8StringEncoding],kSKPSMTPPartMessageKey,@"8bit",kSKPSMTPPartContentTransferEncodingKey

NSDictionary *vcfPart = [NSDictionarydictionaryWithObjectsAndKeys:@"text/plain",kSKPSMTPPartContentTypeKey,[NSStringstringWithFormat:@"%@",contentStr],kSKPSMTPPartMessageKey,@"8bit",kSKPSMTPPartContentTransferEncodingKey,nil];

     //新增附件圖片

NSData *imgData =UIImagePNGRepresentation(_selectIcon);

NSDictionary *imagePart = [NSDictionarydictionaryWithObjectsAndKeys:@"image/png;\r\n\tx-unix-mode=0644;\r\n\tname=\"backIcon.png\"",kSKPSMTPPartContentTypeKey,@"attachment;\r\n\tfilename=\"backIcon.png\"",kSKPSMTPPartContentDispositionKey,[imgDataencodeBase64ForData],kSKPSMTPPartMessageKey,@"base64",kSKPSMTPPartContentTransferEncodingKey,nil];

    testMsg.parts = [NSArrayarrayWithObjects:plainPart,vcfPart,imagePart,nil];

    [testMsg send];

}

//代理方法

- (void)messageSent:(SKPSMTPMessage *)message

{

    [AlertshowWithTitle:@"提交成功"];

    [self.navigationControllerpopViewControllerAnimated:YES];

NSLog(@"%@", message);

}

- (void)messageFailed:(SKPSMTPMessage *)message error:(NSError *)error

{

    [AlertshowWithTitle:@"提交失敗"];

NSLog(@"message - %@\nerror - %@", message, error);

}

  到此為止寫完了,先不用激動，後邊還有坑，當傳送成功收到郵件時，一臉矇蔽了,標題亂碼了,經過一系列的編碼嘗試都不行,這時要修改庫裡的編碼方式,先找到SKPSMTPMessage.m這個類,869行編碼格式改為：NSUTF8StringEncoding