Thanks a lot !!

I guess I could do the same also for the settings..
Then when I reflash the device with a different firmware and reinstall the application I will only need to replace the file with the 'lost' symlink and everything will be back to normal.

Does anybody know which file would that be?

Edit:
Can someone confirm if it's "~/.claws-mail/accountrc" ?

My linux skills are quite limited but managed to go to claws-mail folder and see the files. I noticed that the application is producing also .bak files (which is great if you run into trouble) but wouldn't that be a problem if I move the file and link it?

I will give it a try and see what happens!

Thanks again for the great application.