How Senja.io Streamlined 30+ Review Integrations Into One Simple API

Wilson – CTO and co-founder of Senja.io – reached out to me in November 2024 with a pretty straightforward request: "We currently have 30+ integrations that we are maintaining and we’re looking for a platform that can handle this for us."

Senja.io helps SaaS founders and creators turn customer reviews into powerful marketing assets—widgets, Walls of Love, and shareable social proof.

But behind the scenes, they were juggling review imports from dozens of different platforms. Each integration required separate maintenance, had different data formats, and came with its own costs.

The Challenge: Too Many APIs, Too Much Complexity

With 1,200-1,500 active customer profiles pulling reviews twice a day, Senja was processing around 20,000 reviews every month.

Managing this through multiple vendors was becoming unsustainable. One of the main challenges was migrating from a system with many different vendors to a single high-level API.

"Right now we just call multiple synchronous APIs with review profile URLs and start dates. If we had something like this in ReviewFlowz it would be plug and play."

The team needed a unified solution that could handle their scale while being simple enough to integrate quickly.

Reviewer profile pictures were also a must-have — essential for the visual widgets their customers loved.

Finding the Right Fit

Reviewflowz already supported most of the platforms Senja needed through our existing API infrastructure.

The real-time reviews endpoint from the Reviewflowz API was exactly what Senja needed to integrate easily. Send a URL and a start date, and get reviews sent back. Simple as that.

Behind the scenes, Reviewflowz will either create or update a “Review Profile” with the proper URL, and refresh the reviews for that profile before returning.

This allows Senja to stay in control of their bill since we charge them per review profile (i.e. listing) instead of pricing new reviews. We clean up review profiles that have been inactive for 48h so that they only pay for what they’re actually using.

From Testing to Production in Three Weeks

"The API is ridiculously fast compared to what we were using before. VERY happy with it!" – Wilson

We took a methodical approach to the migration. We started with a handful of platforms to ensure everything worked smoothly, and rapidly expanded to others.

Within one month, Senja had migrated nearly all their integrations to ReviewFlowz. The results spoke for themselves:

• Processing time: 10x faster than their previous solution
• Reliability: In May 2025 (6 months after starting the migration), Wilson reported they had no incidents / issues with any of the existing integrations, and they had also cut down on import costs.

Senja.io makes it easy for SaaS founders and creators to collect and display customer reviews through beautiful widgets and social proof tools.

ReviewFlowz provides unified API access to reviews from 30+ platforms, helping businesses automate their review management at scale. For more information about our API, check out our documentation, or ask for a call with the founder Axel.