SMTP
OUTGOING

Host mail.postale.io
Port 465 (implicit TLS) or 587 (STARTTLS)
SSL/TLS Yes
Username john.doe@yourdomain.com

IMAP (preferred) or POP3
INCOMING

Host mail.postale.io
Port 993 for IMAP or 995 for POP3
SSL/TLS Yes
Username john.doe@yourdomain.com

You can also have most email clients autoconfigure themselves using just your username and password by adding two CNAME records to your domain's DNS. See the DNS guide.

Premium Plus users can alternatively use mail.yourdomain.com in place of mail.postale.io, as part of the white labeling feature. Learn more.