Currently we are using JIRA Software. We notice that some Project have around 5 developers but 20 end-users. The end-users will not login JIRA to check issue status. They will only send email request to developer team and reply on original email.
In order to log their email conversation I have to add the 20 end-user as licensed JIRA users.
So in this case, should I upgrade to JIRA Service Desk instead? So that I can purchase 5 "agent" license and add 20 "customers" (license free?)
Also, what is the upgrade procedure? After I insert the new license key string I can immediately create new Service Desk projects?