I get emails from the same sender, I would like to hide the senders email address. so that there is only the subject line left. I tried to add the sender as a contact, and set it to appear as " " but that didnt help.
To my knowledge, you can’t do this. You can hide the senders email address (menu/tools/settings/mail/read and uncheck “Show email address in header”), but the name will still appear.