I want integrate dropbox with zimbra

You can get an API app key and secret (a.k.a. consumer key and secret) by creating a Dropbox API app at:

https://www.dropbox.com/developers/apps/create

Note that Drop-ins do not have app secrets.

Once you have an app created, the app key and secret will be available by going to the App Console and selecting the app here:

https://www.dropbox.com/developers/apps

Hi, you can do it using the next Zimlet - https://gallery.zimbra.com/type/zimlet/dropbox-zimlet Depends of your Zimbra Collaboration version could needs a bit development inside as the Zimlets is a bit old.

If you have any doubt or problem come to the Zimbra Community and ask - https://community.zimbra.com/collaboration/f/1886

Best regards