cybele.cloud

What It Is

Cybele Safe Mail is a service designed for the secure transmission of email attachments. Its page clearly positions it as a solution to the PPAP problem: the traditional practice of compressing confidential files into a password-protected ZIP file, then sending the plaintext password in a separate email. The service aims to replace that workflow with automatic encryption and permission controls, allowing senders to attach files as usual while recipients only need to receive a single email and click the attachment to open it.

Core Capabilities

In terms of channels, Cybele Safe Mail only discloses support for email attachment scenarios, with no mention of SMS, voice, or IM. Its core mechanism is to convert all digital data attachments after sending into a proprietary .amsd format protected by advanced encryption technology, rather than ZIP files. The page states that its foundation comes from a next-generation encryption technology platform developed over many years by アメニディ社, and that it applies attribute-based encryption to control data exchange based on the relationship between people and digital data. One important capability is that the sender can change attachment-opening permissions after the email has been sent, making it more suitable than simple password-protected ZIP files for handling misdirected emails, permission changes, and similar scenarios.

Pricing and Integration

The page does not disclose pricing, plans, billing models, free trials, or payment methods. It also does not explain whether SaaS, private deployment, gateway deployment, or client-side plugins are supported. There is no information about APIs or integrations with Microsoft 365, Google Workspace, email gateways, DLP, or identity systems. Before procurement, enterprises should therefore focus on asking about deployment architecture, compatibility, audit logs, and administrator control capabilities.

Pros and Cons

The main advantage is that the usage logic is clear and directly addresses the security pain point of PPAP: it avoids sending plaintext passwords in email bodies and reduces the manual hassle of compressing files, setting passwords, and sending them separately. It also provides post-send permission adjustments for attachments, making security controls more dynamic. The drawback is that public information is limited, with key enterprise evaluation metrics such as deliverability, performance, availability, compliance certifications, and data storage regions missing. The proprietary .amsd format may also raise questions around the recipient’s opening environment, collaboration with external customers, and long-term archival compatibility.

Who It’s For and Access from China

It is better suited to Japanese companies, teams such as legal, finance, and HR that frequently send confidential attachments by email, and organizations looking to phase out PPAP. The page does not provide information about access from mainland China, and payment methods are also unknown. If cross-border collaboration is frequent, alternatives from Microsoft, Google, Proofpoint, Mimecast, or cloud-drive-based permission sharing are also worth evaluating.