How to Recover IncrediMail Folders That Have Disappeared

To bring back custom folders IncrediMail fails to show in the folder list:

Go to your IncrediMail data folder in Windows Explorer. You can find its location by selecting Tools / Options / Data Folder Settings in IncrediMail. Copy the location, which may be something like: C:\Users\Name\AppData\Local\IM

Make sure IncrediMail is shut down.

Go to the location of your IncrediMail Data Folder on your hard drive. It is easiest to do this by pasting the string into a web browser. The string will look something like this: C:\Users\Name\AppData\Local\IM

Open the Identities folder.

Open the folder with the long ID number.
If you have more than one folder with an ID number, perform the steps below for each.

Open the Message Store folder.
Delete the Folders.imm file in it.

Open IncrediMail.