Yes. Our virus filter will scan your incoming email attachments for tens of thousands of known viruses. Email without attachments will not be scanned at all, and attachments without viruses will be delivered without any alteration to the email attachment.
If you try to send an attachment with a virus, we’ll attempt to clean the attachment and deliver it with a message saying that a virus was found and removed. If we cannot clean an attachment with a virus, the attachment will be deleted and you'll receive a message stating that a virus was found and the file(s) deleted. Virus definitions are added on a regular basis.