Move mails to other domain

Duosh3

Hello, first of all, I would like to say that so far I have been very satisfied with using MailCow as my mail server. However, I am currently facing a problem for which I couldn’t find a solution on any forum. Our company is changing the domain we operate in. All mailboxes currently on the current domain need to be fully transferred to the new domain within the same MailCow instance. Something like a copy-paste operation. I would appreciate any advice or links to articles that could help with performing such an operation. Creating mailboxes is not a problem, but transferring emails in a better way than using rsync for each mailbox separately would greatly facilitate the process (we have about 1TB of emails to transfer).

Duosh3

So far, I’ve been transferring mailboxes using the synchronization command built into MailCow. However, I lack the functionality in it to copy by selecting two mailboxes in the local instance, just as with the synchronization command where I choose an external email for synchronization, or, and here is the option I’m missing, I choose which mailbox to place emails in within the local instance.