Klaviyo Deliverability Hacks Every Marketer Should Know

Klaviyo deliverability is a crucial factor for email marketing success. As a marketer, you need to ensure that your emails reach the inbox of your subscribers and don’t end up in the dreaded spam folder. In this article, we will share some valuable Klaviyo deliverability hacks that every marketer should know to improve their email deliverability rates and maximize their campaign effectiveness. From optimizing your email content to maintaining a clean subscriber list, these hacks will help you boost engagement, increase conversions, and ultimately achieve better results with your Klaviyo campaigns. So let’s dive in and discover the top Klaviyo deliverability hacks that can take your email marketing game to the next level!

Understanding Email Deliverability

Email deliverability refers to the ability of your emails to reach the recipients’ inboxes successfully. It plays a crucial role in the success of your email marketing campaigns. To improve your Klaviyo deliverability, you need to understand how it works and implement effective strategies. Here are some key points to consider:

  1. Sender Reputation: Your sender reputation is determined by various factors such as email engagement, spam complaints, bounce rates, and more. Maintaining a good sender reputation is essential for achieving high deliverability.

  2. Authentication: Implementing authentication protocols like SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication Reporting and Conformance) helps verify that your emails are legitimate and not forged or spoofed.

  3. List Hygiene: Regularly clean up your subscriber list by removing inactive or bouncing email addresses. This ensures that you’re only sending emails to engaged recipients who are likely to open and interact with them.

  4. Content Quality: Craft well-written and relevant content that engages subscribers. Avoid using excessive capitalization, exclamation marks, or spam trigger words that could trigger filters leading to poor deliverability.

  5. Optimize Subject Lines: Write clear subject lines that accurately reflect the content of your emails while avoiding deceptive tactics or clickbait phrases that can negatively impact inbox placement.

  6. Segmentation: Segmenting your subscriber list based on demographics, preferences, past interactions, or purchase history allows you to send targeted emails tailored specifically for each group’s interests, increasing engagement rates.

  7. Testing & Monitoring: Regularly test different elements of your campaigns such as subject lines, sending times, personalization techniques, etc., then monitor their performance using analytics tools provided by Klaviyo.

Remember: Improving email deliverability requires ongoing effort and adaptation as ISPs update their algorithms regularly.

Optimizing Sender Reputation

To ensure your emails reach the inbox of your subscribers, it’s crucial to optimize your sender reputation. Here are some effective hacks every marketer should know:

  1. Authenticate Your Email Domain: Implement email authentication protocols like SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting & Conformance) to verify that you are a legitimate sender.

  2. Maintain a Clean Email List: Regularly clean your email list by removing inactive or disengaged subscribers. High bounce rates and spam complaints can negatively impact your sender reputation.

  3. Focus on Engagement: Engage with your audience regularly to maintain strong relationships. Encourage recipients to open and interact with your emails by providing valuable content tailored to their interests.

  4. Monitor Blacklists: Keep an eye on email blacklists that flag senders as potential spammers. If you find yourself on a blacklist, take immediate action to identify the cause and resolve any issues.

  5. Avoid Spam Traps: Spam traps are email addresses created solely for identifying spammers. Avoid sending emails to purchased or outdated lists that may contain these traps.

  6. Segment Your Email List: Segmenting your email list allows you to send targeted campaigns based on subscriber preferences, behavior, or demographics, increasing engagement and reducing the likelihood of being marked as spam.

  7. Manage Complaints Promptly: Monitor feedback loops provided by ISPs (Internet Service Providers) and promptly handle any complaints received from subscribers who mark your emails as spam.


Implementing Best Practices for Better Deliverability

When it comes to improving email deliverability in Klaviyo, following best practices is crucial. Here are some hacks that every marketer should know:

  1. Maintain a Clean Email List: Regularly clean your email list by removing invalid and inactive addresses. This helps minimize bounce rates and improves your sender reputation.

  2. Use Double Opt-in: Implementing double opt-in ensures that subscribers have confirmed their interest in receiving emails from you. It reduces the chances of spam complaints and increases engagement.

  3. Segment Your Audience: Divide your subscriber base into smaller segments based on demographics, preferences, or behavior. By sending targeted emails to specific segments, you can improve relevance and engagement rates.

  4. Personalize Your Emails: Tailor your content to resonate with individual subscribers by using dynamic tags like first name or location within the email body or subject line.

  5. Craft Engaging Subject Lines: Grab attention with compelling subject lines that entice recipients to open your emails. Avoid using all caps or excessive punctuation as they may trigger spam filters.

  6. Optimize Email Design for Mobile: Ensure your emails are mobile-friendly and responsive across various devices and screen sizes, as a significant portion of users read emails on smartphones.

  7. Monitor Sender Reputation Score: Keep an eye on your sender reputation score through Klaviyo’s integration with services like Senderscore.org or GlockApps.com to identify any delivery issues promptly.

8 .Avoid Spam Triggers: Be mindful of common elements that might trigger spam filters such as too many images, excessive use of certain keywords (like “free” or “buy now”), or misleading subject lines.

9 .Regularly Test Emails Before Sending: Run tests by sending sample emails to different accounts (e.g., Gmail, Yahoo) before launching campaigns at scale to ensure proper rendering and avoid potential issues.

  1. Monitor Deliverability Metrics: Track key metrics such as open rates, click-through rates, and spam complaints to gauge the effectiveness of your email campaigns and identify areas for improvement.

By implementing these best practices in Klaviyo, you can enhance deliverability and improve the success of your email marketing efforts. Remember that maintaining a good sender reputation is an ongoing process that requires constant monitoring and optimization.


In conclusion, understanding and implementing these Klaviyo deliverability hacks is essential for every marketer. By following these strategies, you can significantly improve your email deliverability rates and ensure that your messages reach the intended recipients’ inboxes.

Firstly, focusing on maintaining a clean and engaged subscriber list is crucial. Regularly cleaning out inactive or unengaged subscribers will not only help improve your overall deliverability but also enhance the effectiveness of your email campaigns. Secondly, personalization plays a vital role in ensuring successful delivery. Tailoring content to match each recipient’s preferences and behaviors increases engagement and decreases the chances of emails being marked as spam.

Additionally, optimizing email design with mobile devices in mind is imperative since an increasing number of users access their emails through smartphones or tablets. Ensuring that your emails are responsive and visually appealing across different screen sizes will boost engagement rates and positively impact deliverability.

Furthermore, monitoring metrics such as open rates, click-through rates, bounce rates, spam complaints regularly allows you to identify areas for improvement proactively. Utilizing A/B testing enables you to experiment with different subject lines, content variations, or send times to refine your email strategy continuously.

Lastly but importantly – always adhere to best practices outlined by Klaviyo regarding permission-based marketing techniques and avoiding blacklisted practices such as purchasing email lists or sending unsolicited messages.

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