Giving edit access to Google Drive documents is sufficient. The way these files work, once they are shared with a user, the file will appear in their "Shared with me" list
If they remove or delete a file from this list, it will not remove the document from any other user's list, nor will it destroy the file. Only the owner can trash a document.
Learn more about trashing documents here: http://support.google.com/drive/bin/answer.py?hl=en&answer=2494934&p=restore_trash_collab
If the owner trashes a document, they can get it back from their Trash folder:
Learn how to recover a file or folder that you moved to the trash.
If something in Google Drive is moved to the trash, you'll see a
warning and you may lose access to it at any time. Read one of the
following sections to learn how to restore it to your Google Drive
from the trash. When you restore something, it'll be recovered in
Google Drive on the web, to the Google Drive folder on your computer,
and to your mobile devices.
If the item is in a folder, you’ll need to restore the entire folder
to recover any individual items inside of it.
Owners
If you're the owner of something and you’ve placed it in the trash,
you'll see a warning that reads "This item is in your trash" when you
open the doc or file.
If you’d like to restore a doc or file to your Google Drive:
Search for it in the Trash. Select the file(s) or doc(s) you’d like to
recover. Click the Restore button.
Folders and file structures behave the same way, if regular editors remove these it will disappear from their "Shared with me" list but it only affects them, not the rest of the collaborators.
Best Answer
There's no native way to email documents to Google Drive. You'll need a third-party tool.
I would use If This Then That (IFTTT). By combining the right channels you can get the attachments from an email message into your Google Drive.
There are a couple of ways to go about it. Since you're using Google Drive, you presumably have a Gmail account. There are already several recipes that will take attachments (under the right circumstances) and save them to Drive for you, such as this one: Save new email attachments to Google Drive. Essentially, it looks for one or more attachments on any email received at your Gmail address and saves it into the Google Drive folder you designate. By using a slightly different trigger, you can have it only save attachments with messages from your work address or with certain keywords in the subject. (Use the "New mail in inbox from search" trigger with
has:attachmentand whatever other search term you need.)Another way to do it, without getting email involved, is to use the Email channel and the right trigger.
You could certainly just send email to
trigger@recipe.ifttt.comand have it fire, but then you're precluding using the same trigger for other recipes. I suggest using the "Send IFTTT an email tagged" trigger.Then, the action is simply to save to Google Drive.
Of course, you'll need to send the email from the email address associated with your IFTTT account in order for it to work.
I've created a recipe which does just that.