如何从Cocoa发送HTML电子邮件？

我正在寻找一种从OS X Cocoa应用程序创建HTML格式的电子邮件的方法.

我首选的工作流程是:用户选择一个菜单项,默认的邮件应用程序打开,前台有一个预先填好的新电子邮件.

我可以使用mailto和 - [NSWorkspace openURL]来处理纯文本电子邮件,但这不适用于HTML电子邮件.

我也对此感兴趣,所以两天逆向工程Safaris的"本页的邮件内容"功能,我得到了它的工作.

更新:我改进了代码并将其放在GitHub上

- (void)mailWebArchive:(WebArchive *)webArchive title:(NSString *)aTitle URL:(NSString *)aURL {
NSString *bundleID = @"com.apple.mail";
NSData* targetBundleID = [bundleID dataUsingEncoding:NSUTF8StringEncoding];
NSAppleEventDescriptor *targetDescriptor = nil;
NSAppleEventDescriptor *appleEvent = nil;

targetDescriptor = [NSAppleEventDescriptor descriptorWithDescriptorType:typeApplicationBundleID
                                                                   data:targetBundleID];
appleEvent = [NSAppleEventDescriptor appleEventWithEventClass:'mail'
                                                      eventID:'mlpg'
                                             targetDescriptor:targetDescriptor
                                                     returnID:kAutoGenerateReturnID
                                                transactionID:kAnyTransactionID];
[appleEvent setParamDescriptor:[NSAppleEventDescriptor descriptorWithDescriptorType:'tdta'
                                                                               data:[webArchive data]]
                    forKeyword:'----'];
[appleEvent setParamDescriptor:[NSAppleEventDescriptor descriptorWithString:aTitle]
                    forKeyword:'urln'];
[appleEvent setParamDescriptor:[NSAppleEventDescriptor descriptorWithString:aURL]
                    forKeyword:'url '];


NSAppleEventDescriptor *replyDescriptor = nil;
NSAppleEventDescriptor *errorDescriptor = nil;
AEDesc reply = { typeNull, NULL };  

// Send the AppleEvent
OSStatus status = AESendMessage([appleEvent aeDesc],
                    &reply,
                    kAEWaitReply,
                    kAEDefaultTimeout);
if(status == noErr)
{
    replyDescriptor = [[[NSAppleEventDescriptor alloc] initWithAEDescNoCopy:&reply] autorelease];
    errorDescriptor = [replyDescriptor paramDescriptorForKeyword:keyErrorNumber];
    if(errorDescriptor != nil)
        status = [errorDescriptor int32Value];

    if(status != noErr)
        NSLog(@"%s error %d", _cmd, status);
}
}

此代码不检查Mail是否正在运行,因此它仅在Mail已启动时才起作用.

这种方法的专业方面,它适用于实现MailLinkSupported和MailPageSupported的所有电子邮件客户端.见QA1722.

缺点是您无法设置收件人,如a mailto.为此,Scripting Bridge似乎是唯一的解决方案.请参阅此修改后的SBSendEmail示例.