Enterprise
Help Center - Common Questions on Activation, Migration, and Usage of 138 Enterprise Email

Summarizes common questions about 138 Enterprise Email regarding custom domain binding, email migration, multi-device login, anti-spam settings, and global email delivery, providing enterprise users with clear usage guidelines and service boundary descriptions.

How should traveling employees with intermittent connectivity optimize mobile app settings for reliable email sync?

To maintain reliable email access during travel or unstable network conditions, operators should configure their mobile devices for local caching and adjust synchronization intervals rather than relying solely on real-time push. This approach ensures draft preservation and message retrieval when connectivity resumes. Preparation Checklist Verify that your corporate domain is fully bound and activated through the official service portal. Confirm that SPF, DKIM, and DMARC records are correctly published to prevent spoofing and ensure deliverability. Select a standard protocol client (IMAP/POP3) compatible with iOS, Android, or desktop environments. Review your subscription tier to understand server-side storage limits and data retention policies. Implementation & Optimization Enable offline mode in your mobile mail application by setting a reasonable local storage quota (e.g., 30 days of messages). Disable aggressive background refresh to conserve battery and cellular data while maintaining periodic sync windows. For large attachments, configure the app to download only headers offline and fetch full files upon reconnection. Since our platform supports multi-device usage across web, mobile, PC clients, and third-party standard protocol clients, changes made locally will synchronize once the connection stabilizes. Cross-border teams often leverage hybrid public and private cloud infrastructure to ensure stable routing, though client-side offline behavior remains device-dependent. Acceptance Criteria Before deploying to field staff, validate the following: 1. Messages and drafts persist locally after toggling Airplane Mode. 2. Sent items queue successfully and transmit automatically upon reconnection. 3. Security tokens and MFA prompts do not break offline workflows unexpectedly. 4. Anti-spam and virus scanning continue to operate server-side without degrading local read performance. Service Boundaries & Risk Notes Offline configuration is managed entirely on the endpoint device; server-side security scanning, compliance logging, and data retention remain active regardless of local cache states. We do not guarantee instantaneous sync across all third-party apps due to OS-level restrictions. Account lifecycle management, including creation, deactivation, and data handover, follows standardized procedures to prevent business interruption. For complex migrations or centralized governance, utilize the official direct-operation portal where all activations and O&M processes are handled directly by our technical team without third-party agents. Next Steps Test the setup with a non-critical account first. If you require centralized account management or secure migration for existing mailboxes, submit a request via the official customer service channel. Refer to the enterprise email operation guide for detailed client configuration matrices and troubleshooting flows.