--- title: How Fluint Built on Courier to Scale Multi-Channel Notifications from Day One description: Fluint chose Courier as its notification foundation, expanding from email to multi-channel delivery while freeing engineers to focus on core product. published: "Jun 17, 2026, 10:45 PM UTC" --- #### [Use Cases](../customers) #### Fluint # **How Fluint Built on Courier to Scale Multi-Channel Notifications from Day One** #### The Challenge ### Notifications Without Distraction Fluint is an AI-driven SaaS platform that helps revenue teams close complex deals. Its product continuously analyzes conversations, generates content, and recommends next steps. These insights only matter if they reach salespeople quickly and reliably in the tools they already use. From the start, notifications weren’t a nice-to-have; they were core to the product experience. Building notifications in-house would have meant stitching together email and SMS providers, wiring APIs and webhooks, implementing templating and routing, managing retries and throttling, and maintaining the glue code over time. For an early-stage startup, that work would drain valuable engineering cycles. [Brandon](https://www.linkedin.com/in/brandonleafman/), Fluint’s principal engineer, wanted those cycles invested in the core AI product instead. At previous companies, he had seen how notification infrastructure quickly grew into a long-term maintenance burden. Debugging delivery issues, patching brittle integrations, and fielding support questions pulled engineers away from innovation. At Fluint, he wanted a different path that kept the team focused on building product. #### The Solution ### A Foundation From Day One Rather than spend months building infrastructure, Fluint made an early decision to standardize on Courier as its notification layer. Brandon had already seen Courier succeed at scale in a previous role, which gave him confidence it could support Fluint as the company grew. The rollout began with email, the most critical channel for sales users. Courier’s strong handlebars support made this fast. Instead of spending days hand-coding templates, Brandon used AI to turn notification designs into MJML, then dropped that output directly into Courier. With a quick round of edits, he had production-ready templates in minutes. Courier also fit naturally with Fluint’s product vision. Salespeople live in their CRM and inbox, not in Fluint all day, so reaching them where they already work was essential. With Courier in place, expanding to SMS, push, Slack, or in-app was no longer daunting. Each channel could be added on top of the same foundation, creating a single system for multi-channel notifications without new integrations or duplicated effort. Equally important, Courier built in safeguards that Fluint didn’t want to maintain themselves. Features like per-user and per-tenant throttling gave Brandon peace of mind that an API error wouldn’t overwhelm users. Logs provided immediate visibility into delivery, making it easy to trace what was sent and when. Customer Success could even check delivery status on their own, reducing the need for engineering support. “Notifications are critical, but they’re not where I want engineers spending time… especially when the features customers ask for are already built into Courier.” Brandon Leafman — Principal Software Engineer, Fluint #### The Outcome ### Reliable Notifications, Teams That Move Faster Courier turned notifications from an ongoing engineering burden into a dependable system the whole company could trust. For engineers, the difference was immediate. Templates were created in minutes instead of days, and notification logic moved out of the codebase entirely. Once events were wired in, delivery became “set it and forget it.” The team no longer had to maintain servers, debug APIs, or patch brittle integrations, which freed them to focus on Fluint’s AI product. For Customer Success, Courier provided visibility. The team could check delivery status, confirm whether a message was sent, and answer user questions on their own. Instead of pulling in engineering for every issue, support handled most notifications-related requests directly. At the same time, Courier gave Fluint confidence to grow. Starting with email and expanding to SMS, push, Slack, and in-app, new channels were no longer daunting. What once looked like months of engineering work became simple configuration. With Courier as the foundation, Fluint could scale notifications alongside its product without slowing down. ### Other use cases [All use cases](../customers) [Twilio Twilio's quest for a unified notification experience](./twilio) [Apartment List How Apartment List improved buyer-seller marketplace communications](./apartment-list) [LaunchDarkly Delivering multi-channel banking grade notifications](./launchdarkly) ## Every message, every channel. One platform Stop building messaging infrastructure. Start shipping. 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