Use your favorite mail client
You can use your domain emails with any mail client you like (Gmail, Outlook, Thunderbird, ...). Simply open the client and add your account with the settings below (replace firstname.lastname@example.org with your actual domain email address).
Host mail.postale.io Port 587 for TLS or 465 for SSL SSL/TLS Yes, with authentication required Username email@example.com
IMAP (preferred) or POP3
Host mail.postale.io Port 993 for IMAP or 995 for POP3 SSL/TLS Yes Username firstname.lastname@example.org
You can also have mail clients autoconfigure themselves from your domain email address and password by adding two CNAME records to your domain DNS. See the DNS guide.