If Azure Databricks alerts are not consistently sending emails, verify if your alert configurations, email settings, and recipient details are correct.
Check Databricks workspace logs for errors, review connectivity and permissions to ensure Databricks can send emails, and test with simpler alerts to isolate issues. Delays may be due to service throttling or email provider filters.
You can look into known issues or recent updates affecting alerts by reviewing Azure Databricks release notes and Azure Status for potential service disruptions. For persistent issues, consider contacting Azure Support for deeper assistance.