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Cause 1: SMTP Server Configuration

Go to Incoming Emails in JIRA Jira Administration and check if your SMTP server settings are correct. Send a test email to various email addresses (in and outside JIRAJira) to verify that emails will reach all recipients.

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Case 4: Notification Template is Not Added to Context

After you created a Notification Template with Events Event Notifications and recipients, you must associate the Notificaiton Template with projects. You do this by adding the Notificaiton in a Context Contexts. There is a detailed tutorial Setting up Customized Notificationson this topic.

Case 5: Recipient Whitelist does not Include Recipient

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