Looking for a courier from a colleague in my MS inbox, but it comes from no-reply @ sharepoint

I'm looking for a courier from a colleague in my MS inbox – but it comes from no-reply @ sharepoint … When I search for my colleague's name, the mail is not found. When I search on & # 39; no-reply @ sharepoint & # 39; [the sender] – the mail is also not found. Therefore, my question is: how to look for this type of mail? Which search string should I use?
Thank you Simon