Blockchain-based Gmail plugin lets users keep control over email attachments after they're sent

Gmail application icon on a smartphone screen
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Blockchain smart document specialist ShelterZoom has announced the launch of its new Document GPS solution in the Google Chrome Store.

The first Gmail document tokenization tool on the market, the offering has been designed to monitor and control email attachments so users can manage their entire journey – gaining visibility over who downloaded the file, who opened it, and who forwarded it.

Document GPS also allows senders to revoke a recipient’s ability to download or share the attachments at any time – even after the email has been sent.

“ShelterZoom was built on the premise of upgrading the safety and security of how people exchange information online by making it easy and effortless to integrate with blockchain,” explained ShelterZoom CEO and Co-Founder Chao Cheng-Shorland.

“What we have already created for documents and contracts we have now brought to email attachments so the full lifecycle of a document’s journey is secure. Document GPS also complements our virtual negotiating platform so users can carry out a complete workflow in the same secure ecosystem.”

With the growth of Web3, ShelterZoom says that digital security will take on an even more crucial role than it already does. To help tackle this, Document GPS provides email senders with a timestamped log in their interactive Attachment Library built into their email interface – allowing complete visibility into how each recipient has interacted with the file.

The company has built the solution on the same blockchain technology that powers their entire platform to give Gmail and Google Workspace users an extra layer of security integrated into the system.


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ShelterZoom says it plans to release a similar tool for Microsoft Outlook users later this year. For now, current use cases include crypto banking professionals, small business owners, as well as personal Google users.

“With the click of a button, our clients and collaborators are now empowered with total control over important documents, giving us peace of mind of their origin, authenticity and access, greatly reducing risk of fraud, document loss or mishandling,” commented Michel Garibaldi of Arab Bank. “For the finance industry, this is a game-changer.”

Gregg Farrauto, Founder and CEO of US-based Farrauto Wealth Management said: “By using Document GPS for high-stakes attachments, I can rest easier knowing I can track the documents I send and my clients' private information is protected even if their email system gets hacked."

Daniel Todd

Dan is a freelance writer and regular contributor to ChannelPro, covering the latest news stories across the IT, technology, and channel landscapes. Topics regularly cover cloud technologies, cyber security, software and operating system guides, and the latest mergers and acquisitions.

A journalism graduate from Leeds Beckett University, he combines a passion for the written word with a keen interest in the latest technology and its influence in an increasingly connected world.

He started writing for ChannelPro back in 2016, focusing on a mixture of news and technology guides, before becoming a regular contributor to ITPro. Elsewhere, he has previously written news and features across a range of other topics, including sport, music, and general news.