On Thu, 2022-02-17 at 12:05 -0600, c. marlow wrote:
I am just afraid that using a MOVE command filter could cause some emails to come up missing or something like that.
There's always this approach: Download all mails to a mail spool file. Input that file into your new mail system. After all is done, delete the spool.
There are tools for migrating mail. Some mail clients even have them built in.