You can indeed use Aid4Mail to migrate your mail to or from iCloud.
How to export your mail from iCloud to another mail application using Aid4Mail:
- Select IMAP in the "Mail Source" screen of Aid4Mail
- Populate the "IMAP Settings" with the following information:
o Server name: imap.mail.me.com
o Port: 993
o Timeout: 90
o Connection security: SSL/TLS
o Namespace: default
o User name: your email address
o password: your email account password - If configured correctly, you will see a list of your folders in the following screen. Here you can select the mail folders you wish to transfer.
- Follow the Aid4Mail wizard and select your "Target Settings" then start your migration.
How to import your mail to iCloud from another mail application using Aid4Mail:
- Select your current mail application/service in the "Mail Source" screen of Aid4Mail
- Follow the Aid4Mail Wizard and populate the settings for your "Mail Source"
- Select "IMAP" as your "Target" in the "Target Settings"
- Populate the "IMAP Settings" with the following information:
o Server name: imap.mail.me.com
o Port: 993
o Timeout: 90
o Connection security: SSL/TLS
o Namespace: default
o User name: your email address
o password: your email account password - If configured correctly, you will see a list of your folders in the following screen. Here you can select the mail folders you wish to set as your "Target IMAP Folder"
- Follow the Aid4Mail wizard and start your migration.
If you are unable to connect to your iCloud account using these settings and the normal password, you may want to try generating an app-specific password as show here: https://support.apple.com/en-us/HT204397
Two-Factor Authentication has to be turned on in order to generate an app-specific password. Once you are finished you can turn it back off.
Should you require any assistance, please don't hesitate to contact the help desk.
If you would like to buy an Aid4Mail license please visit the Aid4Mail website.