How to Assess 138 Enterprise Email Provider Reliability: Plan Differences & Evaluation Criteria?

Evaluating the reliability of 138 Enterprise Email for your shortlist requires looking beyond basic storage metrics. As an implementation manager, you should assess its officially direct-operated service model, verifiable security baselines, and strict account management boundaries. Here is a step-by-step evaluation path with checkpoints and constraints.

Step 1: Verify the Direct-Operated Service & Domain Prerequisites

Checkpoint: 138 Enterprise Email operates on an officially direct-operated model without intermediary agents. This ensures that activation, migration, and daily O&M are handled directly by the provider, reducing communication friction and ensuring consistent service quality.

Constraint: The service strictly uses your custom domain as the @ suffix. You cannot create an enterprise email without a domain. If you do not own one, the official team can assist with registration, but you must verify the domain's ownership entity and renewal rights before signing the contract.

Step 2: Assess Security Baselines & Protocol Boundaries

Checkpoint: Reliability in global communication depends on sender authentication. Evaluate if the provider enforces standard protocols. 138 natively supports SPF, DKIM, and DMARC, alongside weak password restrictions and IP-based login limits.

Implementation Boundary: Security is a shared responsibility. Your team must actively configure and verify SPF/DKIM, and phase in DMARC. Furthermore, when integrating third-party standard protocol clients, you must enforce the use of dedicated client-specific passwords rather than primary account passwords to minimize exposure.

Step 3: Evaluate Account Management & Support Exceptions

Checkpoint: Review the provider's support boundaries for account recovery and compliance. Enterprise purchases require business licenses and formal contracts, ensuring legal and operational compliance.

Exception Handling: A critical reliability factor is how support handles compromised accounts. Note that 138 official support will not directly reset passwords for standard sub-accounts. Password resets must be executed by the enterprise administrator or by the user via a bound mobile device. High-risk roles (finance, executives) must be strictly prohibited from sharing accounts.

Next Actions for Your Shortlist

To finalize your evaluation, map your internal IT policies against 138’s native security capabilities. Test the administrator password recovery workflow and review the official DMARC deployment guidelines in the Help Center. Contact the official direct-operated team to request a customized migration and security configuration plan.