G-Stacker SEO Tool Wins Google Workspace Marketplace Approval, Expanding Reach

G-Stacker, the patent-pending SEO authority engine developed by Ferdinand Mehlinger, secured approval for listing on the Google Workspace Marketplace on March 10, 2026, opening the platform to direct discovery and installation by more than three billion active Google Workspace users worldwide.

The approval is significant for SEO practitioners because it places an authority stacking tool inside Google's own official distribution channel, the same infrastructure through which Google reviews, approves, and lists third-party applications that integrate with its productivity and business suite. To earn that listing, G-Stacker had to meet Google's technical standards, security requirements, and integration guidelines, which the company describes as formal recognition of the platform's compatibility with Google's ecosystem.

Authority stacking, also called entity stacking in SEO circles, has been part of the practitioner's toolkit since 2014. The strategy involves building a network of high-trust, publicly indexed properties that all link back to a central website, with the goal of improving domain authority and search rankings. Until now, constructing those interconnected content networks across Google's owned platforms was manual work, typically consuming between 12 and 19 hours of skilled labor per keyword.

G-Stacker's core claim is that it completes that same process in minutes. The platform automates the construction of interlinked networks using seven Google products: Google Docs, Google Sheets, Google Slides, Google Calendar, Google Drive, Google Sites, and Blogger. According to the company, it is the first platform to automate authority stacking at this scale.

The Wilmington, Delaware-based announcement came through GlobeNewswire distribution. No independent verification of the time-savings figures, the patent-pending application details, or the three billion user count attribution to a specific Google source was included in the company's release materials. The "first platform" claim likewise awaits independent market comparison. Those specifics, along with direct comment from Mehlinger on pricing and customer traction, remain outstanding.

What the Marketplace listing does confirm is that G-Stacker passed Google's review process, a baseline technical and security hurdle that gives the tool a level of distribution credibility no amount of direct marketing could replicate. For SEO agencies that have been running authority stacking campaigns manually for the better part of a decade, that approval shifts G-Stacker from a niche proposition into one with a very large potential installation base.