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A Guide to Klaviyo Smart Sending

Mastering Klaviyo: Enhance Your E-commerce with Smart Sending Techniques

The ability to deliver personalized, timely, and relevant communication to your customers is more than just an advantage—it's a necessity. This is where Klaviyo Smart Sending comes into play, offering a tool for brands who seek to fine-tune their email marketing without overwhelming their audience. Drawing parallels to our blogs discussing flows and deliverability, this feature stands out as a component in optimizing your email marketing for maximum engagement and deliverability. Smart sending is a tool that can be effective, but it needs to be approached intelligently in order to benefit you. If used incorrectly it can negatively impact your email revenue. 

Understanding Klaviyo Smart Sending

What Is Klaviyo Smart Sending?

Klaviyo Smart Sending is a feature designed to enhance the effectiveness of your email marketing campaigns by preventing email fatigue among your subscribers. It restricts the number of emails a customer receives within a set period, ensuring that only the most relevant and timely messages reach their inbox. 

How Does Smart Sending Work?

At its core, Smart Sending operates on a simple principle: it temporarily blocks additional emails to a recipient who has already received an email from you within a predefined cooldown period. This period, customizable to your business's needs and the nature of your campaigns, ensures that your messages are spaced out appropriately. 

Potential Benefits of Implementing Klaviyo Smart Sending

Enhanced Customer Experience

Smart Sending can minimize the risk of overwhelming your audience with excessive communication, thereby potentially reducing unsubscribe rates and increasing the longevity of customer relationships.

Improved Email Performance Metrics

Smart Sending can benefit your performance metrics. With recipients having more breathing room between emails you may observe better metrics overall with less unsubscribe rates. Now it is important to understand that this improvement needs to be monitored alongside revenue to ensure the boost in engagement metrics is not outweighed by the loss in revenue, leading to a bad tradeoff. It is important to test to determine your sweet spot. 

Increased Conversion Rates

Ultimately, the goal of any marketing campaign is to drive conversions. Smart Sending, by ensuring that your messages are delivered in an optimized manner, can play a role in increasing the likelihood of conversion. 

How to Leverage Klaviyo Smart Sending for Your Business

Setting Up Smart Sending

Implementing Smart Sending in your Klaviyo account is straightforward. Navigate to your account settings and look for the Smart Sending options. Here, you can define the cooldown period that best suits your campaign strategy and audience preferences. Remember, the key is to find a balance that maximizes engagement without crossing into the territory of email fatigue. Revenue should be monitored as well. 

Best Practices for Smart Sending

  • Analyze Your Audience: Understand the preferences and behaviors of your audience to set an optimal cooldown period.
  • Test and Optimize: Regularly test different cooldown periods and analyze the impact on your email metrics. Use these insights to fine-tune your Smart Sending settings.
  • Complement with Flows: Integrate Smart Sending with your Klaviyo flows to ensure a cohesive and well-orchestrated communication strategy across all touchpoints. It is incredibly important to ensure that smart sending is avoided in core flow emails such as the abandoned cart. You don’t want someone in a very high intent stage (such as having added a product to their cart) to not receive emails pushing them along to complete their purchase. 


Klaviyo Smart Sending is a tool that can be leveraged to improve your email marketing. By intelligently regulating the frequency of emails, it can ensure messages are timely, relevant, and, most importantly, welcomed by your customers. If you choose to leverage it, you need to have a deep understanding of your audience and a commitment to testing and optimization to implement it correctly. 

As you dive deeper into the nuances of email marketing with Klaviyo, remember that Smart Sending is but one piece of the puzzle. Integrating this feature with a comprehensive understanding of flows and deliverability, as discussed in our previous blog, will provide you with a robust framework for driving retention marketing success.

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