CodeTwo Attach Unblocker allows fast and convenient configuration of Microsoft Outlook to unblock attachments blocked by Outlook by default (for example, .exe, .url, .reg files). The settings are available in the property sheet in the Outlook options, which ensures quick and con- venient editing.

Since the Microsoft Office 2000 with Service Pack 2 version (E-mail Security Update), Outlook has not allowed opening some attachment types due to safety reasons. These attachments are considered to be potentially dangerous as they may contain viruses or can damage the system. A dangerous attachment can neither be opened, nor saved on the hard disk (Fig.3). It will also be deleted while attempting to forward the message. Therefore, it is not possible to read such an attachment in Outlook. CodeTwo Attach Unblocker will enable you to read all of the blocked attachments.

Unblocking attachments

In order to define the attachment typesthat should not be blocked, choose Tools | Options in the Outlook menu and go to the CodeTwo Attach Unblocker tab. In the text field (Fig.1), enter the file extension (the attachment type) you wish to unblock and click Add. The file extension will be added to the Unblocked attachments list and after restarting Outlook attachments of that type will no longer be blocked and you will be able to save them on your hard drive (Fig.2).

More than one type of attachment can be entered in one edit field by separating the types with a semicolon. The types are not case sensitive.

Fig.1. Unblocking unsafe attachments in Microsoft Office Outlook. Fig.2. When you use Attach Unblocker, unsafe attachments (.exe and .reg files in this case) can be saved to hard disk and then opened.

If unsafe attachments are blocked by Outlook, you cannot access them. Attachments cannot be viewed, opened, forwarded or saved to disk (Fig.3). You need to use CodeTwo Attach Unblocker to unblock and access attachments.

Fig.3. Unsafe attachments blocked by Outlook (.exe and .reg files here) can neither be opened, nor saved to disk. They will also be deleted at the attempt to forward the message.