My way dealing with email has converged over the years to the following. First, there two different kind of on-demand addresses. 1. Registration, these emails

My way dealing with email has converged over the years to the following. First, there two different kind of on-demand addresses. 1. Registration, these emails are stored in the password manager 2. Throw away, one time addresses Second, I maintain a two mail folder method: inbox and archive. Sent mails are put into inbox, too. This makes mail threads a whole. From there they are either purged if spam or moved over to archive. From here I can answer your question, how I manage all those generated addresses. The folders are indexed. So I am able to find anything (if not encrypted). In particular I can retrieve all my used addresses.