I have created 2 case in SharePoint to notify customer when the case is created and resolved.
In the notify customer when the case is created workflow, I have ticked start workflow automatically when the item is created in the start options with workflow
If Current Item:Contact Email is not empty
Email Current Item:Contact Email
which sends one email to customer when its created and working fine.
In the notify customer when the case is resolved workflow, I have ticked start workflow automatically when the item is created and changed also tried to just tick changed, in the start options with workflow
If Current Item:Status equals Resolved
and Current Item:Contact Email is not empty
Email Current Item:Contact Email
which sends 2 email to customer when its resolved instead of 1.