Organising an automatic move of an email to the right folder automatically
Why can I not program the email to a correct folder and keep the same folder for subsequent emails?
Depending on the email app used, you may be able
to set a rule for the app to do this for you. If you state
the email app used, someone may offer a solution.
This link will give you a start to filter email on iCloud.com
Set up rules to filter email in Mail on iCloud.com - Apple Support (SG)
Your email provider may also offer such a feature.