--- title: Mail to processing description: How an email travels from Microsoft 365 through the mail worker to the processing side. sidebar: label: Mail to processing order: 3 --- The mail worker fetches mail from Microsoft 365 and hands it over through shared stores, then the processing side picks the job up from there. [![Data flow from Microsoft 365 through the mail worker to the processing side](/blume-assets/content/content/engineering/mail-to-processing-preview.png)](/engineering/mail-to-processing-diagram) Open the interactive diagram