Automatic deletion of spam & trash timer

Hello, I am not sure whether it is a thing but is it possible already but I would like to see customisation of the time it takes before emails will self delete in the spam and trash folders, I often need to recall emails from months ago that I have accidentally deleted and have needed to go back in trash for (which is what I did when I was using Fastmail as that is possible in Fastmail) however when using Proton I cannot do this to my knowledge so it would be cool to see this.