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Secure Message Portal

Encrypted.In the browser.For every recipient.

When the recipient has neither S/MIME nor PGP: The Conbool Secure Message Portal enables encrypted communication via a secure web portal. With reply functionality.

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Secure Portal
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Secure Message Portal: Encrypted Emails for Every Recipient

The Conbool Secure Message Portal is the secure fallback when your recipient doesn't have encryption certificates. Confidential messages are delivered, read, and replied to via a protected web portal.

Why a Secure Message Portal?

Not everyone has encryption

Only a fraction of all email users have S/MIME certificates or PGP keys. Yet you still need to communicate confidentially.

PDF isn't always enough

PDF encryption is good for one-way communication. But what if the recipient needs to reply?

Email is insecure

Standard email is transmitted in plain text. Without encryption, third parties can read along.

Compliance demands it

GDPR, NIS2, and industry-specific regulations require encrypted communication for sensitive data.

How the Secure Message Portal works

Three simple steps. No setup, no software, no keys.

1

You send an email

Write your email as usual. Conbool automatically detects when encryption is required.

2

Portal notification

The recipient receives a notification with a secure link to the Conbool Portal. The actual message stays protected.

3

Read and reply

After one-time registration, the recipient can read the message in the browser, download attachments, and reply encrypted.

What the Secure Message Portal offers

More than a simple web portal. A full-featured encrypted communication platform.

End-to-end Encryption

Messages are encrypted with TLS and AES. Neither Conbool nor third parties can read the content.

Reply Functionality

The recipient can reply encrypted directly in the portal. No separate email encryption needed.

File Attachment Support

Send and receive encrypted attachments of any size. Ideal for contracts, invoices, and sensitive documents.

Custom Branding

The portal can be customized with your logo, colors, and domain. Professional appearance to your recipients.

Automatic Fallback

Conbool checks S/MIME first, then PGP, then TLS. The portal is the intelligent fallback when no standard is available.

Delivery Confirmation

See if and when the recipient opened the message. Verifiable for audits and compliance.

Portal vs. PDF: When to use which?

Both methods have their use case. Conbool automatically chooses the best option.

Secure Message Portal

  • Recipient needs to reply
  • Regular confidential communication
  • Large file attachments
  • Delivery confirmation required

PDF-Verschlüsselung

  • One-time confidential delivery
  • Recipient needs offline access
  • Minimal effort for recipient
  • Archiving at the recipient

How recipients experience the portal

Simple, intuitive, and without technical barriers.

1

Notification in inbox

The recipient receives a clearly designed email indicating a secure message with a link to the portal.

2

One-time registration

On first access, the recipient creates a password. After that, access is immediately available.

3

Read and reply

In the portal, the recipient sees the message, can download attachments, and reply encrypted.

FAQ

Does the recipient need to install software?
No. The Secure Message Portal works in any modern browser. No plugins, no apps, no certificates.
How secure is the portal?
All data is encrypted with TLS in transit and AES at rest. Servers are located in Germany. Conbool has no access to message content.
Can I brand the portal with my own design?
Yes. You can configure your logo, colors, and domain for the portal. The recipient sees your company, not Conbool.
How long do messages stay available in the portal?
The retention period is configurable. By default, messages remain available for 90 days but can be set longer or shorter.
Does the portal work with Microsoft 365?
Yes. Conbool integrates natively with Microsoft 365 and Exchange Online. The portal is automatically used as a fallback when no other encryption is possible.
What's the difference from Conbool PDF encryption?
PDF encryption is suited for one-way communication without reply functionality. The portal offers bidirectional encrypted communication, delivery confirmations, and file attachment support.

Secure emails for every recipient.

Start now with the Secure Message Portal. No recipient setup, full encryption.

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