使用Google Apps脚本(
http://script.google.com),我知道从
the docs开始,如何发送,转发,转移到垃圾邮件等,但我找不到如何删除电子邮件的文件附件,即：
>保留文本内容(无论是HTML格式还是纯文本格式都可以)
>保留原始发件人,保留收件人
>保留原始消息日期/小时(重要！)
>删除附件
如果通过API无法实现,是否有办法将消息重新发送给自己,同时保留1,2和3？
注意：GmailAttachment类看起来很有趣,并允许列出收件人：
var threads = GmailApp.getInBoxThreads(0,10); var msgs = GmailApp.getMessagesForThreads(threads); for (var i = 0 ; i < msgs.length; i++) { for (var j = 0; j < msgs[i].length; j++) { var attachments = msgs[i][j].getAttachments(); for (var k = 0; k < attachments.length; k++) { Logger.log('Message "%s" contains the attachment "%s" (%s bytes)',msgs[i][j].getSubject(),attachments[k].getName(),attachments[k].getSize()); } } }
但我找不到如何删除附件.
注意：我已经研究了许多其他解决方案,我已经阅读了几乎所有关于此的文章(具有专用Web服务的解决方案,本地客户端如Thunderbird Attachment extractor插件等),但它们都不是真的真的很酷.这就是为什么我正在寻找通过Google Apps脚本手动执行此操作的解决方案.
解决方法
看起来消息必须是
re-created-ish：
Messages are immutable: they can only be created and deleted. No message properties can be changed other than the labels applied to a given message.
使用Advanced Gmail Service和Gmail API insert(),你可以使用以下方法破解它：Gmail.Users.Messages.insert(resource,userId)
此高级服务must be enabled使用前.
示例：[使用email_id或以任何方式填写EMAIL_ID以获取电子邮件]
function removeAttachments () {
// Get the `raw` email
var email = GmailApp.getMessageById("EMAIL_ID").getRawContent();
// Find the end boundary of html or plain-text email
var re_html = /(-*\w*)(\r)*(\n)*(?=Content-Type: text\/html;)/.exec(email);
var re = re_html || /(-*\w*)(\r)*(\n)*(?=Content-Type: text\/plain;)/.exec(email);
// Find the index of the end of message boundary
var start = re[1].length + re.index;
var boundary = email.indexOf(re[1],start);
// Remove the attachments & Encode the attachment-free RFC 2822 formatted email string
var base64_encoded_email = Utilities.base64EncodeWebSafe(email.substr(0,boundary));
// Set the base64Encoded string to the `raw` required property
var resource = {'raw': base64_encoded_email}
// Re-insert the email into the user gmail account with the insert time
/* var response = Gmail.Users.Messages.insert(resource,'me'); */
// Re-insert the email with the original date/time
var response = Gmail.Users.Messages.insert(resource,'me',null,{'internalDateSource': 'dateHeader'});
Logger.log("The inserted email id is: %s",response.id)
}
编辑/更新：新的RegExp使用html&纯文本电子邮件 – 现在应该在多个边界字符串上工作
