My mail on my computer from outlook is not receiving or sending mail

Hey there anne-mari112,

Thanks for reaching out to Apple Support Communities. We understand you’re not able to send or receive mail with Outlook over iCloud. We’ll be happy to help.

Start with the steps in this link for the issue you’re reporting. They will often provide a resolution for issues with Outlook and iCloud:

Get help using Outlook with iCloud for Windows 

We hope this helps. Take care.