Migrate from Pegasus Mail to Thunderbird

I finally took the plunge and migrated my mail from Pegasus to Thunderbird.

Unfortunately this was not as straightforward as I had hoped. However I did find a relatively simple solution.

1. Go through your mail and delete any messages that have large attachments. This will speed up the process greatly.
2. Copy all your message folders (*.PMM) to a machine that is running *nix. Messages are located by default at C:\PMAIL\MAIL\yourusername\
3. Download the following file pmail2mbox.c and then compile it.
   gcc pmail2mbox.c -o pmail2mbox
4. Place the result pmail2mbox file in the same folder as the PMM files.
   
5. Change to that directory then run the following command.
   for mailbox in `ls *.PMM`; do ./pmail2mbox -s $mailbox; done
6. This will convert all the mailboxes into mbox format.
   
7. All you need to do now is copy the resulting files into the Thunderbird mail directory. e.g. C:\Documents and Settings\yourusername\Application Data\Thunderbird\Profiles\4zhmyze7.default\Mail\Local Folders

Fire up thunderbird and all your new messages will be displayed. There's a little bit of tweaking to be done, like copying the copiestoself messages into the sent folder.

You'll need to migrate your signature as well. Create a text file in c:\program files\thunderbird\ that contains your signature. Select Tools -> Account Settings -> the name of the account on that screen you can then point to your signature file.