How do I upgrade my solo 138 Enterprise Email subscription to support a growing team?

You can upgrade your solo 138 Enterprise Email subscription to a multi-user corporate plan directly through the official service portal without losing existing data or domain reputation. The process transitions your custom domain from a single-user setup to a centralized enterprise management system, enabling features like multi-domain binding, advanced anti-spam protection, and unified account control.

Key Conditions & Preparation:
To upgrade, you must have administrative access to your domain's DNS settings to update authentication records (SPF, DKIM, DMARC) required for enterprise-grade global delivery. This is essential for businesses expanding into international markets, similar to how cross-border clients like GUORLAN and Lac Hao Electronics Vietnam leveraged 138's multi-node infrastructure for stable communication.

Implementation & Boundaries:
The upgrade is handled by 138's officially direct-operated team, ensuring seamless migration of historical emails and configuration of new user accounts. Note that advanced security certifications (e.g., MLPS Level 3, EAL3+) and compliance features applicable to industries like law (e.g., GuoX Law Firm) are activated only upon full migration to the corporate tier. Solo plans do not include these enterprise-level audit and forensic capabilities.

Next Steps:
Contact 138 official support or log in to your admin panel to initiate the plan assessment. Do not create separate solo accounts for new employees, as this compromises centralized security and management. Our team will guide you through DNS verification and user provisioning to ensure a smooth transition.