SeeZam is an online virtual safe deposit box service provided by SeeZam S.A., positioned for secure storage, sharing, retention, and electronic signing of confidential documents. The platform says it has been used by tens of thousands of users since 2009, supports all electronic file formats, and targets businesses, public organizations, individuals, and highly sensitive data scenarios such as finance, healthcare, HR, boards of directors, insurance, banking, and R&D.
Its core security approach is not traditional endpoint antivirus, but reducing the risks of phishing, ransomware, file loss, and misdelivery through encrypted vaults, strong authentication, and controlled sharing. The materials state that data in transit is encrypted at 2048 bits, while the contents of each library are protected by re-encrypted 3072-bit keys. It also supports strong authentication options such as Entrust, LuxTrust, and Soft Token. SeeZam emphasizes that it cannot access user content and that it regularly undergoes security and vulnerability testing by independent auditors.
Deployment is relatively flexible: it can be used as a SaaS service hosted in POST Télécom PSF’s geographically redundant data centers in Luxembourg; deployed under a site license on the customer’s own infrastructure or in the cloud; or integrated via the SeeZam Open API, with Swagger and Slate tooling provided to make it easier for business systems to connect. On compliance, the materials explicitly mention GDPR, eIDAS advanced/qualified electronic signatures, and Luxembourg’s legal environment for cloud services and encryption. However, there is no visible mention of certifications such as ISO 27001 or SOC 2.
Pricing information is incomplete. The FAQ provides an example renewal price for a PREMIUM SOFT TOKEN account starting from €24 per year including tax. Advanced signatures are deducted from signature packs, while qualified signatures and LuxTrust may incur third-party fees. Enterprise deployment, API access, white-labeling, and similar options require contacting the company for a quote. In terms of functionality, it offers permission management, signature workflow monitoring, reminders, secure mobile access, and notifications, making overall usability fairly good.
Its strengths include a clear focus on confidentiality, local hosting in Luxembourg, a zero-access commitment, multiple deployment models, and strong authentication capabilities. Weaknesses include limited public information on pricing, SLA, RTO/RPO, SIEM alert integration, and authoritative security certifications. It is best suited to organizations in Europe with high compliance pressure that need to protect board documents, HR payslips, medical reports, banking and insurance files, whistleblowing channels, or intellectual property.
The materials do not provide information on access from mainland China, payment methods, or local nodes, so this remains unknown. Teams in mainland China should first test direct-connection latency, file upload stability, email notification deliverability, and the payment process. If local compliance and access experience are priorities, domestic enterprise cloud drive, e-signature, or cloud-based secure document management alternatives may be worth evaluating.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on postebox.lu official site.
postebox.lu is an Luxembourg Cybersecurity provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach postebox.lu directly.