If you're trying to connect your point-of-sale system to Klaviyo, you have several options. Each has pros and cons. Let's review the main approaches so you can choose what's best for your situation.
Our Recommendation
For most agencies and retailers, we recommend Gather. It's purpose-built for this exact use case, offers real-time sync, handles edge cases automatically, and scales efficiently. If you're managing multiple clients or need reliability without maintenance, it's the best choice.