Support | Thunderbird
Download and install Thunderbird for Windows.
You can do so here: Thunderbird Download
Enter your email address and password, then choose configure manually:
Update the Hostname to mail.afternorth.com for both incoming and outgoing mail servers.
IMAP port 993 and SMTP port 465 with SSL/TLS Connection security:
Now connect your Contacts and Calendars
Thats it, you're done!