
The SSLPost Add-on software can be purchased as a Secure Email and Document Delivery Packaged Service that is hosted by your organisation, or can be purchased as a Managed Service from GCrypt. For more information on the prices for the managed service, please contact our sales team to arrange a call.



SSLPost provides a secure invoice delivery service by email that complies with the HMRC rules on electronic invoicing.
The HMRC guidelines state that businesses may invoice electronically where the authenticity of the origin and integrity of the invoice data are guaranteed. The guidelines are applicable to anyone who issues, or is intending to issue, VAT sales invoices electronically.
Compliance with the HMRC guidelines can be achieved through encryption techniques such as an “advanced electronic signature.” The HMRC definition of an advanced electronic signature is set out as follows:
The SSLPost software guarantees the authenticity of the origin and the integrity of the invoice data by providing a full “audit trail” that records the date and time your invoices are opened. An “advanced electronic signature” is used alongside Secure Sockets Layer (SSL) protocols to encrypt and protect invoices to achieve VAT compliance with electronic invoicing.
View further details on the HMRC webpage on electronic invoicing.
Read the HMRC electronic invoicing notice
Read the HMRC e-invoicing legislation
See how the SSLPost solution can be used to send secure invoices.
Please download the SSLPost white paper for a detailed introduction to SSLPost, and an overview of the relevant email security issues and technologies.
GCrypt are now members of BASDA (the Business Application Software Developers Association). BASDA is the recognised public voice of the software applications industry.

