Documi for Gmail is a Chrome add-on developed by Documi, Inc. that allows users to easily send protected documents through Gmail. With this add-on enabled, Documi will automatically intercept attachments in your emails and reply with custom magic links for each recipient. These magic links provide controlled access to the documents, allowing you to limit who can see what and under which conditions, down to the page level.

Currently, Documi for Gmail supports PDF and image formats. You can easily enable or disable the add-on via the icon located in the lower left corner of your Gmail interface.

Please keep in mind that Documi for Gmail is in an open alpha stage, which means you may encounter bugs or incomplete features. If you come across any errors or unexpected behaviors, it is recommended to report them to the developer for further improvement.