Integrate Your CRM, Email, and Ad Platforms with Custom APIs

Marketing teams often rely on the native integration between their CRM and ad platforms, such as the HubSpot and Google Ads connector. This works for basic conversion tracking, but the data flow is typically one-way. Google Ads sends click and cost data to HubSpot, but getting real sales outcome data back into Google Ads for campaign optimization is a manual, error-prone process.

For example, a marketing manager wants to increase bids on keywords that generate high-value, sales-qualified leads (SQLs). The standard connector only reports a form fill as a conversion. The marketing team ends up optimizing for cheap leads, not good leads, because the ad platform is blind to what happens post-conversion. The sales team's qualification work in the CRM never informs the ad spend, creating a disconnect between marketing efforts and business results.

The common workaround is a weekly manual export of qualified leads from the CRM into a CSV file, which is then uploaded back into Google Ads as an offline conversion. This process takes hours, the data is up to seven days stale, and it is frequently forgotten during busy weeks. The result is ad spend being wasted for days on campaigns that are generating junk leads.

The structural issue is that these platforms are built as destinations, not conduits. Their APIs are designed to get data in or out, but not to facilitate complex, conditional logic between systems. They cannot answer the question: 'If a lead from Campaign A hits the 'SQL' stage in our CRM, immediately increase the budget for Campaign A by 10%.' This requires a dedicated service that sits between the tools, listens for events, and executes business logic that is specific to your sales cycle.

Syntora starts every engagement with a systems audit. We map the entire data journey from a prospect's first ad click to a closed deal in your CRM. This discovery phase identifies the exact trigger points, like a deal stage changing, and the corresponding actions, like updating a custom audience in an ad platform. You receive a technical diagram showing the proposed data flow and API endpoints before any code is written.

For a CRM-to-ad-platform integration, the core of the system is a lightweight API service built with Python and FastAPI. This service listens for webhooks from your CRM. When a sales rep updates a deal, the CRM sends a notification to our API. The API then authenticates with the ad platform, formats the data correctly, and updates the relevant campaign or audience list. We deploy these services on AWS Lambda, which means you only pay when the code runs, keeping hosting costs under $50 per month for thousands of daily updates.

Syntora built a similar system for a marketing agency to automate their Google Ads campaign management. That system handles campaign creation, bid optimization, and reporting by connecting directly to the Google Ads API. The delivered integration for you would be a fully managed, serverless function. Your team continues to use their CRM and ad platforms as usual, but the critical data now flows between them automatically. You own all the source code, which is stored in your GitHub repository, and receive a runbook detailing how to manage the system.