The way that the two extensions work is slightly different so this answer will be in two parts. In terms of data gathering and sharing, both extensions do not bulk gather data, and the scope is limited. No information is shared with non-Greenhouse Servers or 3rd parties. Specific to each extension:
1) The Greenhouse Prospecting Chrome Extension extension requires that you highlight specific text (i.e. first name last name) before it grabs it. It does not scan or save the entire page.
2) The Greenhouse Gmail Extension extension only looks at addresses on messages and if you click on the button, the content of that specific email.
Applies-To: [Chrome Browser Extensions, Prospecting Extension, Google Mail Extension]