NOZIP is a free Chrome add-on developed by ykuwashima that enhances the functionality of Gmail by allowing users to easily modify the subject line of their emails. This add-on specifically targets the issue of automatic encryption and zipping of attachment files by certain security appliances.

With NOZIP, users can easily prevent automatic encryption and zipping by appending the [no-zip] tag to the subject line of their emails. This can be done with just one click, thanks to the NOZIP icon conveniently placed in the Gmail interface. By clicking on the icon, users can ensure that their attachments remain unencrypted and unzipped, providing a hassle-free experience.

NOZIP is a valuable tool for those who frequently deal with security appliances that automatically encrypt and zip attachment files. With its intuitive interface and one-click functionality, NOZIP offers a simple and efficient solution to modify the subject line and prevent automatic encryption and zipping in Gmail.