如何从 Gmail 下载所有带附件的电子邮件？

Question

如何连接到 Gmail 并确定哪些邮件带有附件？然后我想下载每个附件，打印出主题：和来自：对于我处理的每条消息。

Answer 1

硬之一： - ）

import email, getpass, imaplib, os

detach_dir = '.' # directory where to save attachments (default: current)
user = raw_input("Enter your GMail username:")
pwd = getpass.getpass("Enter your password: ")

# connecting to the gmail imap server
m = imaplib.IMAP4_SSL("imap.gmail.com")
m.login(user,pwd)
m.select("[Gmail]/All Mail") # here you a can choose a mail box like INBOX instead
# use m.list() to get all the mailboxes

resp, items = m.search(None, "ALL") # you could filter using the IMAP rules here (check http://www.example-code.com/csharp/imap-search-critera.asp)
items = items[0].split() # getting the mails id

for emailid in items:
    resp, data = m.fetch(emailid, "(RFC822)") # fetching the mail, "`(RFC822)`" means "get the whole stuff", but you can ask for headers only, etc
    email_body = data[0][1] # getting the mail content
    mail = email.message_from_string(email_body) # parsing the mail content to get a mail object

    #Check if any attachments at all
    if mail.get_content_maintype() != 'multipart':
        continue

    print "["+mail["From"]+"] :" + mail["Subject"]

    # we use walk to create a generator so we can iterate on the parts and forget about the recursive headach
    for part in mail.walk():
        # multipart are just containers, so we skip them
        if part.get_content_maintype() == 'multipart':
            continue

        # is this part an attachment ?
        if part.get('Content-Disposition') is None:
            continue

        filename = part.get_filename()
        counter = 1

        # if there is no filename, we create one with a counter to avoid duplicates
        if not filename:
            filename = 'part-%03d%s' % (counter, 'bin')
            counter += 1

        att_path = os.path.join(detach_dir, filename)

        #Check if its already there
        if not os.path.isfile(att_path) :
            # finally write the stuff
            fp = open(att_path, 'wb')
            fp.write(part.get_payload(decode=True))
            fp.close()

Wowww！那是什么。 ;-)但尝试在Java中一样，只是为了好玩！

顺便说，我测试，在一个外壳，使某些错误可能保持。

享受

修改

由于邮件箱名称可以从一个国家改变到另一个，我建议做m.list()和m.select("the mailbox name")前采摘它的一个项目，以避免这个错误：

  

imaplib.error：在状态AUTH非法命令SEARCH，只允许在   状态来选择

Answer 2

我不是一个Perl的专家，但我知道的是，Gmail支持IMAP和POP3，2个协议是完全标准的，让你做到这一点。

也许这可以帮助你上手。

Answer 3

#!/usr/bin/env python
"""Save all attachments for given gmail account."""
import os, sys
from libgmail import GmailAccount

ga = GmailAccount("your.account@gmail.com", "pA$$w0Rd_")
ga.login()

# folders: inbox, starred, all, drafts, sent, spam
for thread in ga.getMessagesByFolder('all', allPages=True):
    for msg in thread:
        sys.stdout.write('.')
        if msg.attachments:
           print "\n", msg.id, msg.number, msg.subject, msg.sender
           for att in msg.attachments:
               if att.filename and att.content:
                  attdir = os.path.join(thread.id, msg.id)
                  if not os.path.isdir(attdir):
                     os.makedirs(attdir)                
                  with open(os.path.join(attdir, att.filename), 'wb') as f:
                       f.write(att.content)

未经测试

1. 确定条款允许这些脚本，否则你的帐户会被暂停
2. 可能有更好的选择：GMail离线模式，雷鸟+ExtractExtensions,GmailFS、主题的驱动，等等。

Answer 4

看一眼 邮件::网页邮件::Gmail:

获取附件

有两种方式获取附件：

1 -> 通过发送对返回的特定附件的引用 get_indv_email

# Creates an array of references to every attachment in your account
my $messages = $gmail->get_messages();
my @attachments;

foreach ( @{ $messages } ) {
    my $email = $gmail->get_indv_email( msg => $_ );
    if ( defined( $email->{ $_->{ 'id' } }->{ 'attachments' } ) ) {
        foreach ( @{ $email->{ $_->{ 'id' } }->{ 'attachments' } } ) {
            push( @attachments, $gmail->get_attachment( attachment => $_ ) );
            if ( $gmail->error() ) {
                print $gmail->error_msg();
            }
        }
    }
}

2 -> 或者通过发送附件ID和消息ID

#retrieve specific attachment
my $msgid = 'F000000000';
my $attachid = '0.1';
my $attach_ref = $gmail->get_attachment( attid => $attachid, msgid => $msgid );

( 返回对保存附件数据的标量的引用。）

Answer 5

在Gmail中，您可以筛选“有：附件”，用它来识别你应该测试时会得到的消息。注意这似乎得到具有附加的文件（示出纸夹图标）两个消息，以及内嵌连接的图像（没有示出纸夹）。

有没有Gmail的API，所以IMAP或POP是你唯一真正的选择。该的JavaMail API 可能一些援助，以及对下载附件从IMAP使用Perl 这非常简洁文章。一些以前的问题这里 SO上也可能有帮助。

此 PHP例如可能有助于太。不幸的是，从我所看到的，有包含在imap_header内没有附件的信息，因此下载的身体需要能够看到X-附件-ID字段。 （有人请证明我错了）。

Answer 6

如果任何你已经更新到Python 3.3我拿了2.7脚本这里和更新它3.3。还固定的一些问题与Gmail的方式被返回的信息。

# Something in lines of http://stackoverflow.com/questions/348630/how-can-i-download-all-emails-with-attachments-from-gmail
# Make sure you have IMAP enabled in your gmail settings.
# Right now it won't download same file name twice even if their contents are different.
# Gmail as of now returns in bytes but just in case they go back to string this line is left here.

import email
import getpass, imaplib
import os
import sys
import time

detach_dir = '.'
if 'attachments' not in os.listdir(detach_dir):
    os.mkdir('attachments')

userName = input('Enter your GMail username:\n')
passwd = getpass.getpass('Enter your password:\n')


try:
    imapSession = imaplib.IMAP4_SSL('imap.gmail.com',993)
    typ, accountDetails = imapSession.login(userName, passwd)
    if typ != 'OK':
        print ('Not able to sign in!')
        raise

    imapSession.select('Inbox')
    typ, data = imapSession.search(None, 'ALL')
    if typ != 'OK':
        print ('Error searching Inbox.')
        raise

    # Iterating over all emails
    for msgId in data[0].split():
        typ, messageParts = imapSession.fetch(msgId, '(RFC822)')

        if typ != 'OK':
            print ('Error fetching mail.')
            raise 

        #print(type(emailBody))
        emailBody = messageParts[0][1]
        #mail = email.message_from_string(emailBody)
        mail = email.message_from_bytes(emailBody)

        for part in mail.walk():
            #print (part)
            if part.get_content_maintype() == 'multipart':
                # print part.as_string()
                continue
            if part.get('Content-Disposition') is None:
                # print part.as_string()
                continue

            fileName = part.get_filename()

            if bool(fileName):
                filePath = os.path.join(detach_dir, 'attachments', fileName)
                if not os.path.isfile(filePath) :
                    print (fileName)
                    fp = open(filePath, 'wb')
                    fp.write(part.get_payload(decode=True))
                    fp.close()

    imapSession.close()
    imapSession.logout()

except :
    print ('Not able to download all attachments.')
    time.sleep(3)

Answer 7

现在的问题是很老和当时的Gmail API不可用。但现在谷歌的Gmail提供的API来访问IMAP。见谷歌的Gmail API 这里。还请参阅谷歌API-蟒客户端PyPI上。

Answer 8

/*based on http://www.codejava.net/java-ee/javamail/using-javamail-for-searching-e-mail-messages*/
package getMailsWithAtt;

import java.io.File;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;

import javax.mail.Address;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.NoSuchProviderException;
import javax.mail.Part;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.internet.MimeBodyPart;
import javax.mail.search.AndTerm;
import javax.mail.search.SearchTerm;
import javax.mail.search.ReceivedDateTerm;
import javax.mail.search.ComparisonTerm;

public class EmailReader {
    private String saveDirectory;

    /**
     * Sets the directory where attached files will be stored.
     * 
     * @param dir
     *            absolute path of the directory
     */
    public void setSaveDirectory(String dir) {
        this.saveDirectory = dir;
    }

    /**
     * Downloads new messages and saves attachments to disk if any.
     * 
     * @param host
     * @param port
     * @param userName
     * @param password
     * @throws IOException
     */
    public void downloadEmailAttachments(String host, String port,
            String userName, String password, Date startDate, Date endDate) {
        Properties props = System.getProperties();
        props.setProperty("mail.store.protocol", "imaps");
        try {
            Session session = Session.getDefaultInstance(props, null);
            Store store = session.getStore("imaps");
            store.connect("imap.gmail.com", userName, password);
            // ...
            Folder inbox = store.getFolder("INBOX");
            inbox.open(Folder.READ_ONLY);
            SearchTerm olderThan = new ReceivedDateTerm (ComparisonTerm.LT, startDate);
            SearchTerm newerThan = new ReceivedDateTerm (ComparisonTerm.GT, endDate);
            SearchTerm andTerm = new AndTerm(olderThan, newerThan);
            //Message[] arrayMessages = inbox.getMessages(); <--get all messages
            Message[] arrayMessages = inbox.search(andTerm);
            for (int i = arrayMessages.length; i > 0; i--) { //from newer to older
                Message msg = arrayMessages[i-1];
                Address[] fromAddress = msg.getFrom();
                String from = fromAddress[0].toString();
                String subject = msg.getSubject();
                String sentDate = msg.getSentDate().toString();
                String receivedDate = msg.getReceivedDate().toString();

                String contentType = msg.getContentType();
                String messageContent = "";

                // store attachment file name, separated by comma
                String attachFiles = "";

                if (contentType.contains("multipart")) {
                    // content may contain attachments
                    Multipart multiPart = (Multipart) msg.getContent();
                    int numberOfParts = multiPart.getCount();
                    for (int partCount = 0; partCount < numberOfParts; partCount++) {
                        MimeBodyPart part = (MimeBodyPart) multiPart
                                .getBodyPart(partCount);
                        if (Part.ATTACHMENT.equalsIgnoreCase(part
                                .getDisposition())) {
                            // this part is attachment
                            String fileName = part.getFileName();
                            attachFiles += fileName + ", ";
                            part.saveFile(saveDirectory + File.separator + fileName);
                        } else {
                            // this part may be the message content
                            messageContent = part.getContent().toString();
                        }
                    }
                    if (attachFiles.length() > 1) {
                        attachFiles = attachFiles.substring(0,
                                attachFiles.length() - 2);
                    }
                } else if (contentType.contains("text/plain")
                        || contentType.contains("text/html")) {
                    Object content = msg.getContent();
                    if (content != null) {
                        messageContent = content.toString();
                    }
                }

                // print out details of each message
                System.out.println("Message #" + (i + 1) + ":");
                System.out.println("\t From: " + from);
                System.out.println("\t Subject: " + subject);
                System.out.println("\t Received: " + sentDate);
                System.out.println("\t Message: " + messageContent);
                System.out.println("\t Attachments: " + attachFiles);
            }

            // disconnect
            inbox.close(false);
            store.close();

        } catch (NoSuchProviderException e) {
            e.printStackTrace();
            System.exit(1);
        } catch (MessagingException e) {
            e.printStackTrace();
            System.exit(2);
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

    /**
     * Runs this program with Gmail POP3 server
     * @throws ParseException 
     */
    public static void main(String[] args) throws ParseException {
        String host = "pop.gmail.com";
        String port = "995";
        String userName = "user@gmail.com";
        String password = "pass";
        Date startDate = new SimpleDateFormat("yyyy-MM-dd").parse("2014-06-30");
        Date endDate = new SimpleDateFormat("yyyy-MM-dd").parse("2014-06-01");
        String saveDirectory = "C:\\Temp";

        EmailReader receiver = new EmailReader();
        receiver.setSaveDirectory(saveDirectory);
        receiver.downloadEmailAttachments(host, port, userName, password,startDate,endDate);

    }
}

Maven的相关性：

<dependency>
    <groupId>com.sun.mail</groupId>
    <artifactId>javax.mail</artifactId>
    <version>1.5.1</version>
</dependency>

Answer 9

由于Gmail支持标准协议POP和IMAP，任何平台，工具，应用程序，组件，或API，它提供任一协议的客户端应工作。

我建议做一个谷歌搜索你喜欢的语言/平台（例如，“蟒蛇”），再加上“流行”，再加上“IMAP”，再加上也许是“开源”，再加上也许是“下载”或“审核”，看看你会得到什么样的选择。

有许多免费的应用程序和组件，挑几个，似乎值得，检查和审查，然后下载和欣赏。

Answer 10

您应该知道的事实是，你需要SSL连接到Gmail（包括POP3和IMAP - 这当然是真的也为自己的SMTP服务器除了端口25但那是另一回事）。

Answer 11

这里的东西我写信给下载 Groovy的（动态语言在Java平台）。

import javax.mail.*
import java.util.Properties

String  gmailServer
int gmailPort
def user, password, LIMIT
def inboxFolder, root, StartDate, EndDate


//    Downloads all attachments from a gmail mail box as per some criteria
//    to a specific folder
//    Based on code from
//    http://agileice.blogspot.com/2008/10/using-groovy-to-connect-to-gmail.html
//    http://stackoverflow.com/questions/155504/download-mail-attachment-with-java
//
//    Requires: 
//        java mail jars in the class path (mail.jar and activation.jar)
//        openssl, with gmail certificate added to java keystore (see agileice blog)
//        
//    further improvement: maybe findAll could be used to filter messages
//    subject could be added as another criteria
////////////////////// <CONFIGURATION> //////////////////////
// Maximm number of emails to access in case parameter range is too high
LIMIT = 10000

// gmail credentials
gmailServer = "imap.gmail.com"
gmailPort = 993

user = "gmailuser@gmail.com"
password = "gmailpassword"

// gmail label, or "INBOX" for inbox
inboxFolder = "finance"

// local file system where the attachment files need to be stored
root = "D:\\AttachmentStore" 

// date range dd-mm-yyyy
StartDate= "31-12-2009"
EndDate = "1-6-2010" 
////////////////////// </CONFIGURATION> //////////////////////

StartDate = Date.parse("dd-MM-yyyy", StartDate)
EndDate = Date.parse("dd-MM-yyyy", EndDate)

Properties props = new Properties();
props.setProperty("mail.store.protocol", "imaps");
props.setProperty("mail.imaps.host", gmailServer);
props.setProperty("mail.imaps.port", gmailPort.toString());
props.setProperty("mail.imaps.partialfetch", "false");

def session = javax.mail.Session.getDefaultInstance(props,null)
def store = session.getStore("imaps")

store.connect(gmailServer, user, password)

int i = 0;
def folder = store.getFolder(inboxFolder)

folder.open(Folder.READ_ONLY)

for(def msg : folder.messages) {

     //if (msg.subject?.contains("bank Statement"))
     println "[$i] From: ${msg.from} Subject: ${msg.subject} -- Received: ${msg.receivedDate}"

     if (msg.receivedDate <  StartDate || msg.receivedDate > EndDate) {
         println "Ignoring due to date range"
         continue
     }


     if (msg.content instanceof Multipart) {
         Multipart mp = (Multipart)msg.content;

         for (int j=0; j < mp.count; j++) {

             Part part = mp.getBodyPart(j);

             println " ---- ${part.fileName} ---- ${part.disposition}"

             if (part.disposition?.equalsIgnoreCase(Part.ATTACHMENT)) {

                 if (part.content) {

                     def name = msg.receivedDate.format("yyyy_MM_dd") + " " + part.fileName
                     println "Saving file to $name"

                     def f = new File(root, name)

                     //f << part.content
                     try {
                         if (!f.exists())
                             f << part.content
                     }
                     catch (Exception e) {
                         println "*** Error *** $e" 
                     }
                 }
                 else {
                    println "NO Content Found!!"
                 }
             }
         }
     }

     if (i++ > LIMIT)
         break;

}

Answer 12

您拍照时看看 GMail的第三方插件在维基百科？

在特别地， PhpGmailDrive 是一个开源插件，则可以以原样使用，或者学习对于灵感？

Answer 13

有关Java中，你会发现 G4J使用。这是一组API通过Java（主页上的截图是围绕此建立了一个示范的电子邮件客户端）

与谷歌邮件沟通