Regarding Records Records may contain email LINKS that are from other records. If you select one these emails have an option ‘Go to Record’

Thank you very much for the clarification @Adam at Classic Sailing the thing is that the e-mail field allows you as you have realized, to edit, delete or send e-mails to that given e-mail address. It does not allow you to access another record because it is not a liking field. At the moment if you need to access another record in a different folder, it should be done by a linking field. However, thanks again for the highlights and please be sure this will be further discussed internally with the team of developers.