How can I configure Openprovider email on a Mac Mail application? To set up Openprovider email on Mac Mail: Open Mail and go to "Mail" > "Add Account." Enter your name, email address, and password. Choose IMAP or Exchange as the account type and enter the server settings: Incoming Mail Server (IMAP): mail.op-email.eu, Port: 993 (SSL), Outgoing Mail Server (SMTP): mail.op-email.eu, Port: 587 (TLS/STARTTLS).