IncrediMail doesn't allow you to export your email-messages, guess they want to force you to keep using their software.

This application exports your IncrediMail message-stores to plain .eml-format (plain text) to a subdirectory to your Incredimail MessageStore directory.
After you converted your IncrediMail folders you can drag the .eml files from Explorer and drop them to any OultookExpress folder you want and the files are restored. I haven't tried to export other email-applications but I believe that most of them will be able to import .eml messages.


Each IncrediMail folder stores its messages in two files -- *.imh and *.imm -- the .imh file is a index-file to .imm where the messages are stored.
Attachments are stored in separate files, this application inserts these messages (if found) and either decodes them as base64 (binary files) or as they are (plain text).

I converted several thousand files and they all seem to work fine.
Some of the messages you import may be marked for deletion, i.e. they don't show up in your IncrediMail folders but they still are in the message-storage file, these messages will also e converted.
