The remedy is to avoid compaction, or to reindex any source mail file immediately after compacting it. Some mailers, such as Microsoft Internet Mail, Microsoft Outlook Express, and Eudora, have different methods of handling message deletion. For this reason, Boilerbase may not be able to tell that a given message has been deleted from a source mail file and may still treat it as an undeleted message. This means that you would see messages indexed in BoilerBase that are not visible in your mailer. This is one approach to avoiding any confusion concerning deleted messages.
Many mailers depict mail files as folders.
Since most users are accustomed to seeing the folder icon used to represent a directory, it may be surprising to find out that the mail folders into which you sort your e-mail messages in most mailers actually correspond to files. One file contains one or multiple messages. Netscape does create a folder to contain other mail files if you use the feature that allows you to place a folder in or under a folder. For example, if you create a folder and place it under the existing inbox folder, BoilerBase creates a directory called inbox.sbd. This subdirectory contains each file that you created to be a sub-folder of inbox, plus for each such file, there is an index file having an snm extension.