I developed a custom app in my developer org and I want to deploy it to sandbox via unmanaged package .
I created an unmanaged package in a Developer org, but I can't figure out how to install it into a sandbox
Once you get the unmanaged package link ,you will replace login with test
Lets say your unmanaged package link is
Your package link for sandbox is as below
Also note it takes significant amount of time for package to appear .Wait for atleast 30 minutes before pressing panic button