I have created an email alert, an email template and a workflow.
The workflow is Active, with the following rule (for testing):
Opportunity: Stage EQUALS Closed Lost
Evaluate the rule when a record is created, and every time it's edited
Email template is 'available for use'. I have sent a test email and I receive the email.
When I change the status of an opportunity to 'Closed Lost' I don't receive an email alert. Have I missed something really obvious?