[Users] Moving emails from another computer

[Peter Richards]

I noticed there is a numbering system with Claws, each file/email has a
unique name. During the few days that I ran Claws on another computer,
there were a number of messages sent/received.

How do I add those emails to the (new) Claws please ? There is a 'File
| Import mbox file' , however these files are not 'mbox', they are
MailDir.

Regards,

Peter