Name_unavailable entries in hierarch.pm can be of value to anyone who attaches another mailbox or directory to their folder list. When you first attach, an entry is made in hierarch.pm. When you detach, the entry is changed to Name_unavailable. When you re-attach, it gets re-used.
If you choose to clen-up hierarch.pm by removing the Name_unavailable entries be sure to have a safety backup copy. I have experienced corruption on two occasions when trying to do such a clean-up. I finally stopped doing them because the Name-unavailable entries are supposed to be harmless.
This is per a gentleman named Bob Kellock who, on 22 March, 2012, provided me with a document that he titled "Pegasus Mail technical data". In it he writes extensively about the hierarch.pm file among other things. AFAIK, he never publicly released this document. The one he sent me contains the following disclaimer "This document is basically a series of notes written for my own use and is an incomplete work in progress and certainly not ready for general publication." I find it to be extremely detailed. I had forgotten about it until I saw reference to "Name_unavailable" in this discussion.
I attempted to contact Mr. Kellock a few years ago without success. He was very helpful to me in 2012 so I don't believe he would mind if I shared this document with anyone who is interested. Unfortunately, there isn't a mechanism here that allows for the private sharing of email addresses and I'm not willing to post the document publicly. Anyone who is interested and has my email address is welcome to send me a request.
Name_unavailable entries in hierarch.pm can be of value to anyone who attaches another mailbox or directory to their folder list. When you first attach, an entry is made in hierarch.pm. When you detach, the entry is changed to Name_unavailable. When you re-attach, it gets re-used.
If you choose to clen-up hierarch.pm by removing the Name_unavailable entries be sure to have a safety backup copy. I have experienced corruption on two occasions when trying to do such a clean-up. I finally stopped doing them because the Name-unavailable entries are supposed to be harmless.
This is per a gentleman named Bob Kellock who, on 22 March, 2012, provided me with a document that he titled "Pegasus Mail technical data". In it he writes extensively about the hierarch.pm file among other things. AFAIK, he never publicly released this document. The one he sent me contains the following disclaimer "This document is basically a series of notes written for my own use and is an incomplete work in progress and certainly not ready for general publication." I find it to be extremely detailed. I had forgotten about it until I saw reference to "Name_unavailable" in this discussion.
I attempted to contact Mr. Kellock a few years ago without success. He was very helpful to me in 2012 so I don't believe he would mind if I shared this document with anyone who is interested. Unfortunately, there isn't a mechanism here that allows for the private sharing of email addresses and I'm not willing to post the document publicly. Anyone who is interested and has my email address is welcome to send me a request.