Can I use an email forwarded for 'Email to Dropbox' feature for attachments?

Hello @boj_man

Thank you for your answer. I appreciate.

That make it clear to me. I'll sort it out in another wat. 

Email to Dropbox is a really good feature, but the lack of will from Dropbox's side to solve the auto-forwarding code really hampers it and makes it not so useful.

Another additional request would be to be able to create multiple email addresses, each one pointing to a specific folder.

In the meantime, you can use this Google Script code to automate without requiring verification:

function forwardEmails() {
  // Set the labels to check
  var labelsToCheck = ["Bills/invoices", "Any other label you want"];

  // Set the forwarding email address
  var forwardAddress = "your.unique.address@addtodropbox.com";

  // Build the search query
  var searchQuery = 'is:unread ';
  for (var i = 0; i < labelsToCheck.length; i++) {
    if (i > 0) {
      searchQuery += ' OR ';
    }
    searchQuery += 'label:' + labelsToCheck[i];
  }

  // Get the Gmail threads with the specified labels
  var threads = GmailApp.search(searchQuery);

  // Loop through each thread
  for (var i = 0; i < threads.length; i++) {
    var thread = threads[i];
    console.log(thread.getLabels())

    // Get the first message in the thread
    var message = thread.getMessages()[0];

    // Forward the message
    message.forward(forwardAddress);

    // Mark the message as read (optional)
    message.markRead();
  }
}