No, once removed, an attachment cannot be retrieved or restored.
Ask the sender to:
- Rename the attachment to docname.ext.rename.rename (where docname.ext is the original name of the attachment including the extension)
- Send the attachment again (with this new name) and a personal message to you.
When you receive this new message with the attachment, you will need to:
- Download the attachment.
- Scan it with your virus checker.
- Rename it. (Windows: right click on the file and select Rename. You need to delete the part of the name that says ".rename" or ".rename.rename".)