There are various methods of connecting to mailboxes on our platform. We always recommend IMAP as that helps keep messages in sync between various devices and our webmail system. This is our recommended configuration for Thunderbird mail clients.
Incoming Server (“Account Settings” > “Server Settings”)
Server Name: imap.yourdomain.com
Username: Your e-mail address
Port: 993
Connection security: SSL/TLS
Authentication method: 'Normal password'
Outgoing Server (SMTP)
Server Name: smtp.yourdomain.com
Port: 587
Connection Security: STARTTLS
Authentication method: 'Normal password'
Username: Your e-mail address