Attachments Zip Compressor (AZC) is an add-on for MS Outlook that can automatically compress outgoing and incoming file attachments as zip files. For incoming way, this is a great way to prevent accidental opening of malicious file attachments ands also allows you to bypass the Outlook attachment blocking rules. The program also includes unzip functionality, so there is no need to use an external zip tool to open the attachments. AZC allows you to specify which files should be zipped, and you can choose zip all incoming attachments, or limit it to potentially dangerous files only. Additional features include creation of self-extracting archives instead of standard zip, password protection, optional auto-unzip and more.