Reviving this topic
I have explored Hook and have encountered at least one use case which is very helpful to me and cannot be done easily without Hook… Hook is able to create a link to a specific email in Office 365 email online.
Until now I have only been able to do this via Zapier and Dropbox as I posted here in the past - as in Cool Tip: Auto Forward Office 365 Email into DT3 - Zapier + Indexed Dropbox Folder
However Hook is able to create the link in a simpler/quicker fashion.
I am still trying to figure out how to create the Hook link as a DT3 bookmark rather than as part of a Rich text document - see Using Hook App with Devonthink - assuming I can figure that out it may be a very nice solution. Not only would it be quicker, but I could also insert the hook link in any DT3 group desired.