Qrew LegendWell, you would just append your URL with &AccessKey= followed by the formula for the Access Key.
Is your application with the single document set up for secure links? Do you have that Permission setup in place and have you invited every on the internet to the target app with a custom rule to view?
Typically, you would use their suggested formula like SHA256 ([Record ID#] on your documents table, and that would be the code for the secure link. So you would simply view that field on the record on the target table and it will have this very long character string which you would copy and paste into your URL that you are emailing emailing.
Feel free to post back if you still have questions about secure links. At first, it took me a while to "get it" as to how they work.
Note also that secure links only guaranteed to work on new style forms. You might be able to get away with viewing on an old form, but not editing.
https://help.quickbase.com/docs/secure-links
https://help.quickbase.com/docs/what-you-can-access-with-secure-links
