Messages in custom folders are not getting archived. Here is a reference article if you want to learn how to Manage LoopMail.
This issue is typically reported by students or teachers who use the Loopmail. The messages in Loopmail are archived at the end of the school year into the respective archive folders.
Messages in custom folders remain in the respective custom folders. Only the messages in the folders like Inbox, Sent and Current Archive messages are moved to the Historical Archives. This process is automatically triggered at the end of the school year. There is a new Historical Archive folder created for every school year in the past.
Custom folders do not have a historical Archive folder.
Q: What happens to all of the messages in my inbox and sent folder at the end of the year?
A: Messages from the previous school year are moved to the Historical Archive towards the end of Summer. There is an archive folder for each school year.
Q: Do messages I placed in custom folders get archived?
A: No. Messages in custom folders remain in the custom folders. The only Inbox, Sent, and Current Archive messages are moved to the Historical Archives.
Q: How do I search my inbox?
A: If you need to search your inbox, you can sort the columns by date, sender, or subject by clicking the column header. Click the header a second time to sort again in the reverse order. You can also search your inbox by using the Lookup tool; just start typing into the text field at the top of your inbox and LoopMail searches for matches and populates a list of results on the fly. You can enter dates such as "3/3" or any part of the sender's name or message subject. If you want to get fancy, use the plus sign for an advanced search such as "3/3 + Wilbur."
Note: The Lookup tool only works on one mailbox at a time. In other words, searching your inbox won't show results from your sent messages. Also, the search does not work on the contents of messages, only the date, title, and sender/recipient(s).