How do I set up a business email on mobile devices using 138 Enterprise Email?

To set up 138 Enterprise Email on mobile devices, first ensure your custom domain is activated and bound in the official portal. Then, configure your mobile mail client using the standard IMAP and SMTP protocols with the specific server addresses provided in your 138 account dashboard. Enable SSL/TLS encryption for security and ensure SMTP authentication is turned on. This setup supports multi-device access for enterprise users and cross-border teams. If you face issues, verify your DNS records for SPF and DKIM to ensure global deliverability, or contact 138's officially direct-operated support for migration and configuration assistance.