Effective email marketing is crucial for businesses looking to connect with their audience. However, getting your emails into subscribers' inboxes, rather than their spam folders, can be a significant hurdle. If you are using Klaviyo as your email marketing tool, there are several strategies you can employ to enhance your email deliverability rates. This guide outlines practical tactics that can improve your email outreach, ensuring that your messages are seen and acted upon.
Understand the Importance of Email Deliverability
Email deliverability means making sure that your emails reach the intended inbox instead of landing in spam. This is influenced by multiple factors, such as your sender reputation, engagement levels, and the content of your emails. In fact, according to a 2022 study, businesses with high deliverability rates experience open rates that can be 20-30% higher than those with low deliverability.
Maintain a Clean Email List
A clean email list is foundational for improving deliverability on Klaviyo. Regularly cleaning your list by removing inactive subscribers can lead to higher engagement. Consider these actionable steps:
Remove Soft and Hard Bounces: Soft bounces may resolve on their own, but repeated occurrences suggest issues. For hard bounces, which indicate non-existent email addresses, removal is urgent. This action prevents your sender score from declining.
Segment Your Audience: Identify subscribers who are not engaging with your emails. Send regularly to your most engaged customers, and less frequently to those who are not opening. Save your best offers and most enticing emails for this group to encourage re-engagement. Segment these users for targeted re-engagement campaigns. If they still don’t respond, it’s best to remove them. This practice can improve your overall open rates by up to 10%.
Authenticate Your Domain
Domain authentication is crucial for improving email deliverability. Klaviyo provides tools to set up DomainKeys Identified Mail (DKIM) and Sender Policy Framework (SPF). Authenticating your domain helps Internet Service Providers (ISPs) recognize your emails as legitimate, enhancing your sender reputation.
To authenticate your domain in Klaviyo, follow these steps:
Navigate to the “Account” section in Klaviyo.
Go to “Domains” and add the domain you wish to authenticate.
Follow Klaviyo's DNS setup instructions for DKIM and SPF records.
Having a properly authenticated domain can lead to a notable increase in your email open rates.
Optimise Content for Engagement
Enhancing your email content can significantly impact deliverability. Quality content attracts attention and shows subscribers that your emails are relevant and valuable. Here are some strategies to consider:
Personalisation: Leverage Klaviyo's segmentation features to send emails tailored to specific audience preferences. Emails personalised based on previous purchases can see open rates increase by up to 26%.
Effective Subject Lines: Create intriguing yet straightforward subject lines that prompt subscribers to open your emails. Avoid using spammy terms like “free,” “discount,” or excessive exclamation marks, as these can trigger spam filters.
Mobile Optimisation: With around 58% of emails opened on mobile devices, ensuring your designs are responsive can enhance user engagement. Make sure fonts are legible and images load quickly.
Monitor Your Metrics
Tracking your email performance metrics is vital for understanding deliverability and identifying areas for improvement. Klaviyo offers accessible analytics to track various key metrics, including:
Open Rate: A declining open rate can indicate a lack of engagement or issues with deliverability. A benchmark open rate for various industries typically hovers around 20%.
Click-Through Rate: This metric shows how engaging your content is. A well-targeted campaign can have a click-through rate of 2-5%.
Unsubscribe Rate: If many subscribers are opting out, it signals that your emails are not meeting their expectations. Aim for an unsubscribe rate below 0.4% to maintain a good sender reputation.
Use insights from these metrics to refine your email marketing strategies. Focus on the aspects that need improvement to optimise your future campaigns.
Test Before Sending
A/B testing is a valuable tool in Klaviyo that enables you to optimise email campaigns for better deliverability.
Before sending major email campaigns, conduct A/B tests on various elements like subject lines or content formats. Testing can reveal what resonates best with your audience, allowing you to make data-driven decisions. For example, changing a call-to-action (CTA) button color can yield markedly different engagement levels.
Ensure Compliance with Regulations
Following email marketing regulations such as the CAN-SPAM Act in the U.S. or GDPR in Europe is crucial for maintaining your sender reputation.
Always include clear opt-out options in your emails and respect unsubscribe requests promptly. Misleading subject lines can lead to penalties and tarnish your reputation. Taking these compliance steps not only safeguards your business but also builds trust with your audience, positively affecting your deliverability.

Final Thoughts on Klaviyo Email Deliverability
Improving email deliverability with Klaviyo involves a multi-faceted approach, from maintaining a clean email list to optimising content quality and adhering to regulations. Implementing these strategies will significantly enhance your email marketing's effectiveness and ensure your messages reach your audience.
As you refine your email tactics, continue testing and monitoring your results. Successful campaigns not only drive engagement but also strengthen customer relationships and support business growth. Maintaining an active and informed approach will help your emails land in inboxes rather than spam folders.
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