iCloud how to transfer emails when moving domain to iCloud+?

[matc]

At my current provider I have an email account with about 7.5GB of emails. Now I'd like to use that domain with iCloud+ going forward. What's the best way to move those 7.5GB to the iCloud email server?

 

[michalm]

Configure apple mail with your current provider and icloud, then you'll see both in Apple mail and you can start moving emails. I suggest you don't do more than 250 at a time, as it may bug out.

 

[matc]

Thanks - with 70k emails that's not the best option. But I found a service called "MailJerry" that is offering a mail transfer through their servers. After almost 24h I'm now 97% done transferring the emails to my iCloud account. So that might be worth a shot for those facing a similar challenge.